diff --git a/helpers/helpers b/helpers/helpers
index 10cefdcad..9b43cde13 100644
--- a/helpers/helpers
+++ b/helpers/helpers
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # Entrypoint for the helpers scripts
-SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+SCRIPT_DIR=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" &> /dev/null && pwd)
 
 # Helpers version can be specified via an environment variable or default to 1.
 YNH_HELPERS_VERSION=${YNH_HELPERS_VERSION:-1}
@@ -21,6 +21,7 @@ case "$YNH_HELPERS_VERSION" in
     *)
         echo "Helpers are not available in version '$YNH_HELPERS_VERSION'." >&2
         exit 1
+        ;;
 esac
 
 eval "$XTRACE_ENABLE"
diff --git a/helpers/helpers.v1.d/apps b/helpers/helpers.v1.d/apps
index e1458d0ed..f55552134 100644
--- a/helpers/helpers.v1.d/apps
+++ b/helpers/helpers.v1.d/apps
@@ -19,8 +19,7 @@ ynh_install_apps() {
     local apps_dependencies=""
 
     # For each app
-    for one_app_and_its_args in "${apps_list[@]}"
-    do
+    for one_app_and_its_args in "${apps_list[@]}"; do
         # Retrieve the name of the app (part before ?)
         local one_app=$(cut -d "?" -f1 <<< "$one_app_and_its_args")
         [ -z "$one_app" ] && ynh_die --message="You didn't provided a YunoHost app to install"
@@ -28,8 +27,7 @@ ynh_install_apps() {
         yunohost tools update apps
 
         # Installing or upgrading the app depending if it's installed or not
-        if ! yunohost app list --output-as json --quiet | jq -e --arg id $one_app '.apps[] | select(.id == $id)' >/dev/null
-        then
+        if ! yunohost app list --output-as json --quiet | jq -e --arg id $one_app '.apps[] | select(.id == $id)' > /dev/null; then
             # Retrieve the arguments of the app (part after ?)
             local one_argument=""
             if [[ "$one_app_and_its_args" == *"?"* ]]; then
@@ -44,8 +42,7 @@ ynh_install_apps() {
             yunohost app upgrade $one_app
         fi
 
-        if [ ! -z "$apps_dependencies" ]
-        then
+        if [ ! -z "$apps_dependencies" ]; then
             apps_dependencies="$apps_dependencies, $one_app"
         else
             apps_dependencies="$one_app"
@@ -67,31 +64,26 @@ ynh_remove_apps() {
     local apps_dependencies=$(ynh_app_setting_get --app=$app --key=apps_dependencies)
     ynh_app_setting_delete --app=$app --key=apps_dependencies
 
-    if [ ! -z "$apps_dependencies" ]
-    then
+    if [ ! -z "$apps_dependencies" ]; then
         # Split the list of apps dependencies in an array
         local apps_dependencies_list=($(echo $apps_dependencies | tr ", " "\n"))
 
         # For each apps dependencies
-        for one_app in "${apps_dependencies_list[@]}"
-        do
+        for one_app in "${apps_dependencies_list[@]}"; do
             # Retrieve the list of installed apps
             local installed_apps_list=$(yunohost app list --output-as json --quiet | jq -r .apps[].id)
             local required_by=""
             local installed_app_required_by=""
 
             # For each other installed app
-            for one_installed_app in $installed_apps_list
-            do
+            for one_installed_app in $installed_apps_list; do
                 # Retrieve the other apps dependencies
                 one_installed_apps_dependencies=$(ynh_app_setting_get --app=$one_installed_app --key=apps_dependencies)
-                if [ ! -z "$one_installed_apps_dependencies" ]
-                then
+                if [ ! -z "$one_installed_apps_dependencies" ]; then
                     one_installed_apps_dependencies_list=($(echo $one_installed_apps_dependencies | tr ", " "\n"))
 
                     # For each dependency of the other apps
-                    for one_installed_app_dependency in "${one_installed_apps_dependencies_list[@]}"
-                    do
+                    for one_installed_app_dependency in "${one_installed_apps_dependencies_list[@]}"; do
                         if [[ $one_installed_app_dependency == $one_app ]]; then
                             required_by="$required_by $one_installed_app"
                         fi
@@ -100,8 +92,7 @@ ynh_remove_apps() {
             done
 
             # If $one_app is no more required
-            if [[ -z "$required_by" ]]
-            then
+            if [[ -z "$required_by" ]]; then
                 # Remove $one_app
                 ynh_print_info --message="Removing of $one_app"
                 yunohost app remove $one_app --purge
@@ -126,90 +117,83 @@ ynh_remove_apps() {
 # from the app's service configuration file (defaults to $app.service, overridable by the packager with `service` setting).
 # If the app relies on a specific PHP version, then `php` will be aliased that version. The PHP command will also be appended with the `phpflags` settings.
 ynh_spawn_app_shell() {
-        # Declare an array to define the options of this helper.
-        local legacy_args=a
-        local -A args_array=([a]=app=)
-        local app
-        # Manage arguments with getopts
-        ynh_handle_getopts_args "$@"
+    # Declare an array to define the options of this helper.
+    local legacy_args=a
+    local -A args_array=([a]=app=)
+    local app
+    # Manage arguments with getopts
+    ynh_handle_getopts_args "$@"
 
-        # Force Bash to be used to run this helper
-        if [[ ! $0 =~ \/?bash$ ]]
-        then
-            ynh_print_err --message="Please use Bash as shell"
-            exit 1
-        fi
+    # Force Bash to be used to run this helper
+    if [[ ! $0 =~ \/?bash$ ]]; then
+        ynh_print_err --message="Please use Bash as shell"
+        exit 1
+    fi
 
-        # Make sure the app is installed
-        local installed_apps_list=($(yunohost app list --output-as json --quiet | jq -r .apps[].id))
-        if [[ " ${installed_apps_list[*]} " != *" ${app} "* ]]
-        then
-            ynh_print_err --message="$app is not in the apps list"
-            exit 1
-        fi
+    # Make sure the app is installed
+    local installed_apps_list=($(yunohost app list --output-as json --quiet | jq -r .apps[].id))
+    if [[ " ${installed_apps_list[*]} " != *" ${app} "* ]]; then
+        ynh_print_err --message="$app is not in the apps list"
+        exit 1
+    fi
 
-        # Make sure the app has its own user
-        if ! id -u "$app" &>/dev/null; then
-            ynh_print_err --message="There is no \"$app\" system user"
-            exit 1
-        fi
+    # Make sure the app has its own user
+    if ! id -u "$app" &> /dev/null; then
+        ynh_print_err --message="There is no \"$app\" system user"
+        exit 1
+    fi
 
-        # Make sure the app has an install_dir setting
-        local install_dir=$(ynh_app_setting_get --app=$app --key=install_dir)
-        if [ -z "$install_dir" ]
-        then
-            ynh_print_err --message="$app has no install_dir setting (does it use packaging format >=2?)"
-            exit 1
-        fi
+    # Make sure the app has an install_dir setting
+    local install_dir=$(ynh_app_setting_get --app=$app --key=install_dir)
+    if [ -z "$install_dir" ]; then
+        ynh_print_err --message="$app has no install_dir setting (does it use packaging format >=2?)"
+        exit 1
+    fi
 
-        # Load the app's service name, or default to $app
-        local service=$(ynh_app_setting_get --app=$app --key=service)
-        [ -z "$service" ] && service=$app;
+    # Load the app's service name, or default to $app
+    local service=$(ynh_app_setting_get --app=$app --key=service)
+    [ -z "$service" ] && service=$app
 
-        # Export HOME variable
-        export HOME=$install_dir;
+    # Export HOME variable
+    export HOME=$install_dir
 
-        # Load the Environment variables from the app's service
-        local env_var=$(systemctl show $service.service -p "Environment" --value)
-        [ -n "$env_var" ] && export $env_var;
+    # Load the Environment variables from the app's service
+    local env_var=$(systemctl show $service.service -p "Environment" --value)
+    [ -n "$env_var" ] && export $env_var
 
-        # Force `php` to its intended version
-        # We use `eval`+`export` since `alias` is not propagated to subshells, even with `export`
-        local phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
-        local phpflags=$(ynh_app_setting_get --app=$app --key=phpflags)
-        if [ -n "$phpversion" ]
-        then
-            eval "php() { php${phpversion} ${phpflags} \"\$@\"; }"
-            export -f php
-        fi
+    # Force `php` to its intended version
+    # We use `eval`+`export` since `alias` is not propagated to subshells, even with `export`
+    local phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
+    local phpflags=$(ynh_app_setting_get --app=$app --key=phpflags)
+    if [ -n "$phpversion" ]; then
+        eval "php() { php${phpversion} ${phpflags} \"\$@\"; }"
+        export -f php
+    fi
 
-        # Source the EnvironmentFiles from the app's service
-        local env_files=($(systemctl show $service.service -p "EnvironmentFiles" --value))
-        if [ ${#env_files[*]} -gt 0 ]
-        then
-            # set -/+a enables and disables new variables being automatically exported. Needed when using `source`.
-            set -a
-            for file in ${env_files[*]}
-            do
-                [[ $file = /* ]] && source $file
-            done
-            set +a
-        fi
+    # Source the EnvironmentFiles from the app's service
+    local env_files=($(systemctl show $service.service -p "EnvironmentFiles" --value))
+    if [ ${#env_files[*]} -gt 0 ]; then
+        # set -/+a enables and disables new variables being automatically exported. Needed when using `source`.
+        set -a
+        for file in ${env_files[*]}; do
+            [[ $file = /* ]] && source $file
+        done
+        set +a
+    fi
 
-        # Activate the Python environment, if it exists
-        if [ -f $install_dir/venv/bin/activate ]
-        then
-            # set -/+a enables and disables new variables being automatically exported. Needed when using `source`.
-            set -a
-            source $install_dir/venv/bin/activate
-            set +a
-        fi
+    # Activate the Python environment, if it exists
+    if [ -f $install_dir/venv/bin/activate ]; then
+        # set -/+a enables and disables new variables being automatically exported. Needed when using `source`.
+        set -a
+        source $install_dir/venv/bin/activate
+        set +a
+    fi
 
-        # cd into the WorkingDirectory set in the service, or default to the install_dir
-        local env_dir=$(systemctl show $service.service -p "WorkingDirectory" --value)
-        [ -z $env_dir ] && env_dir=$install_dir;
-        cd $env_dir
+    # cd into the WorkingDirectory set in the service, or default to the install_dir
+    local env_dir=$(systemctl show $service.service -p "WorkingDirectory" --value)
+    [ -z $env_dir ] && env_dir=$install_dir
+    cd $env_dir
 
-        # Spawn the app shell
-        su -s /bin/bash $app
+    # Spawn the app shell
+    su -s /bin/bash $app
 }
diff --git a/helpers/helpers.v1.d/apt b/helpers/helpers.v1.d/apt
index 798d954f2..dbe5c057e 100644
--- a/helpers/helpers.v1.d/apt
+++ b/helpers/helpers.v1.d/apt
@@ -14,7 +14,7 @@ ynh_wait_dpkg_free() {
     # With seq 1 17, timeout will be almost 30 minutes
     for try in $(seq 1 17); do
         # Check if /var/lib/dpkg/lock is used by another process
-        if lsof /var/lib/dpkg/lock >/dev/null; then
+        if lsof /var/lib/dpkg/lock > /dev/null; then
             echo "apt is already in use..."
             # Sleep an exponential time at each round
             sleep $((try * try))
@@ -32,7 +32,7 @@ ynh_wait_dpkg_free() {
                     set -o xtrace # set -x
                     return 1
                 fi
-            done 9<<<"$(ls -1 $dpkg_dir)"
+            done 9<<< "$(ls -1 $dpkg_dir)"
             set -o xtrace # set -x
             return 0
         fi
@@ -58,8 +58,8 @@ ynh_package_is_installed() {
     # Manage arguments with getopts
     ynh_handle_getopts_args "$@"
 
-    dpkg-query --show --showformat='${Status}' "$package" 2>/dev/null \
-        | grep --count "ok installed" &>/dev/null
+    dpkg-query --show --showformat='${Status}' "$package" 2> /dev/null \
+        | grep --count "ok installed" &> /dev/null
 }
 
 # Get the version of an installed package
@@ -82,7 +82,7 @@ ynh_package_version() {
     ynh_handle_getopts_args "$@"
 
     if ynh_package_is_installed "$package"; then
-        dpkg-query --show --showformat='${Version}' "$package" 2>/dev/null
+        dpkg-query --show --showformat='${Version}' "$package" 2> /dev/null
     else
         echo ''
     fi
@@ -266,8 +266,7 @@ ynh_install_app_dependencies() {
     # The (?<=php) syntax corresponds to lookbehind ;)
     local specific_php_version=$(echo $dependencies | grep -oP '(?<=php)[0-9.]+(?=-|\>|)' | sort -u)
 
-    if [[ -n "$specific_php_version" ]]
-    then
+    if [[ -n "$specific_php_version" ]]; then
         # Cover a small edge case where a packager could have specified "php7.4-pwet php5-gni" which is confusing
         [[ $(echo $specific_php_version | wc -l) -eq 1 ]] \
             || ynh_die --message="Inconsistent php versions in dependencies ... found : $specific_php_version"
@@ -281,8 +280,7 @@ ynh_install_app_dependencies() {
             local old_php_fpm_config_dir=$(ynh_app_setting_get --app=$app --key=fpm_config_dir)
             local old_php_finalphpconf="$old_php_fpm_config_dir/pool.d/$app.conf"
 
-            if [[ -f "$old_php_finalphpconf" ]]
-            then
+            if [[ -f "$old_php_finalphpconf" ]]; then
                 ynh_backup_if_checksum_is_different --file="$old_php_finalphpconf"
                 ynh_remove_fpm_config
             fi
@@ -291,8 +289,7 @@ ynh_install_app_dependencies() {
         ynh_app_setting_set --app=$app --key=phpversion --value=$specific_php_version
 
         # Set the default php version back as the default version for php-cli.
-        if test -e /usr/bin/php$YNH_DEFAULT_PHP_VERSION
-        then
+        if test -e /usr/bin/php$YNH_DEFAULT_PHP_VERSION; then
             update-alternatives --set php /usr/bin/php$YNH_DEFAULT_PHP_VERSION
         fi
     elif grep --quiet 'php' <<< "$dependencies"; then
@@ -306,20 +303,18 @@ ynh_install_app_dependencies() {
     # upgrade script where ynh_install_app_dependencies is called with this
     # expected effect) Otherwise, any subsequent call will add dependencies
     # to those already present in the equivs control file.
-    if [[ $YNH_INSTALL_APP_DEPENDENCIES_REPLACE == "true" ]]
-    then
+    if [[ $YNH_INSTALL_APP_DEPENDENCIES_REPLACE == "true" ]]; then
         YNH_INSTALL_APP_DEPENDENCIES_REPLACE="false"
     else
         local current_dependencies=""
-        if ynh_package_is_installed --package="${dep_app}-ynh-deps"
-        then
+        if ynh_package_is_installed --package="${dep_app}-ynh-deps"; then
             current_dependencies="$(dpkg-query --show --showformat='${Depends}' ${dep_app}-ynh-deps) "
             current_dependencies=${current_dependencies// | /|}
         fi
         dependencies="$current_dependencies, $dependencies"
     fi
 
-    cat >/tmp/${dep_app}-ynh-deps.control <<EOF # Make a control file for equivs-build
+    cat > /tmp/${dep_app}-ynh-deps.control << EOF # Make a control file for equivs-build
 Section: misc
 Priority: optional
 Package: ${dep_app}-ynh-deps
@@ -337,8 +332,7 @@ EOF
 
     # Trigger postgresql regenconf if we may have just installed postgresql
     local psql_installed2="$(ynh_package_is_installed "postgresql-$PSQL_VERSION" && echo yes || echo no)"
-    if [[ "$psql_installed" != "$psql_installed2" ]]
-    then
+    if [[ "$psql_installed" != "$psql_installed2" ]]; then
         yunohost tools regen-conf postgresql
     fi
 
@@ -372,7 +366,7 @@ ynh_add_app_dependencies() {
 #
 # Requires YunoHost version 2.6.4 or higher.
 ynh_remove_app_dependencies() {
-    local dep_app=${app//_/-}  # Replace all '_' by '-'
+    local dep_app=${app//_/-} # Replace all '_' by '-'
 
     local current_dependencies=""
     if ynh_package_is_installed --package="${dep_app}-ynh-deps"; then
@@ -382,16 +376,14 @@ ynh_remove_app_dependencies() {
 
     # Edge case where the app dep may be on hold,
     # cf https://forum.yunohost.org/t/migration-error-cause-of-ffsync/20675/4
-    if apt-mark showhold | grep -q -w ${dep_app}-ynh-deps
-    then
+    if apt-mark showhold | grep -q -w ${dep_app}-ynh-deps; then
         apt-mark unhold ${dep_app}-ynh-deps
     fi
 
     # Remove the fake package and its dependencies if they not still used.
     # (except if dpkg doesn't know anything about the package,
     # which should be symptomatic of a failed install, and we don't want bash to report an error)
-    if dpkg-query --show ${dep_app}-ynh-deps &>/dev/null
-    then
+    if dpkg-query --show ${dep_app}-ynh-deps &> /dev/null; then
         ynh_package_autopurge ${dep_app}-ynh-deps
     fi
 }
@@ -487,11 +479,13 @@ ynh_install_extra_repo() {
     if [[ "${repo_parts[0]}" == "deb" ]]; then
         index=1
     fi
-    uri="${repo_parts[$index]}" ; index=$((index+1))
-    suite="${repo_parts[$index]}" ; index=$((index+1))
+    uri="${repo_parts[$index]}"
+    index=$((index + 1))
+    suite="${repo_parts[$index]}"
+    index=$((index + 1))
 
     # Get the components
-    if (( "${#repo_parts[@]}" > 0 )); then
+    if (("${#repo_parts[@]}" > 0)); then
         component="${repo_parts[*]:$index}"
     fi
 
@@ -512,7 +506,7 @@ ynh_install_extra_repo() {
     if [ -n "$key" ] && [[ "$key" != "trusted=yes" ]]; then
         mkdir --parents "/etc/apt/trusted.gpg.d"
         # Timeout option is here to enforce the timeout on dns query and tcp connect (c.f. man wget)
-        wget --timeout 900 --quiet "$key" --output-document=- | gpg --dearmor | $wget_append /etc/apt/trusted.gpg.d/$name.gpg >/dev/null
+        wget --timeout 900 --quiet "$key" --output-document=- | gpg --dearmor | $wget_append /etc/apt/trusted.gpg.d/$name.gpg > /dev/null
     fi
 
     # Update the list of package with the new repo
diff --git a/helpers/helpers.v1.d/backup b/helpers/helpers.v1.d/backup
index a596ac9e0..b05629aa3 100644
--- a/helpers/helpers.v1.d/backup
+++ b/helpers/helpers.v1.d/backup
@@ -162,7 +162,7 @@ ynh_backup() {
     # ==============================================================================
     local src=$(echo "${src_path}" | sed --regexp-extended 's/"/\"\"/g')
     local dest=$(echo "${dest_path}" | sed --regexp-extended 's/"/\"\"/g')
-    echo "\"${src}\",\"${dest}\"" >>"${YNH_BACKUP_CSV}"
+    echo "\"${src}\",\"${dest}\"" >> "${YNH_BACKUP_CSV}"
 
     # ==============================================================================
 
@@ -289,8 +289,7 @@ ynh_restore_file() {
     # Boring hack for nginx conf file mapped to php7.3
     # Note that there's no need to patch the fpm config because most php apps
     # will call "ynh_add_fpm_config" during restore, effectively recreating the file from scratch
-    if [[ "${dest_path}" == "/etc/nginx/conf.d/"* ]] && grep 'php7.3.*sock' "${dest_path}"
-    then
+    if [[ "${dest_path}" == "/etc/nginx/conf.d/"* ]] && grep 'php7.3.*sock' "${dest_path}"; then
         sed -i 's/php7.3/php7.4/g' "${dest_path}"
     fi
 }
@@ -376,8 +375,7 @@ ynh_backup_if_checksum_is_different() {
             echo "$backup_file_checksum" # Return the name of the backup file
             if [ ${PACKAGE_CHECK_EXEC:-0} -eq 1 ]; then
                 local file_path_base64=$(echo "$file" | base64 -w0)
-                if test -e /var/cache/yunohost/appconfbackup/original_${file_path_base64}
-                then
+                if test -e /var/cache/yunohost/appconfbackup/original_${file_path_base64}; then
                     ynh_print_warn "Diff with the original file:"
                     diff --report-identical-files --unified --color=always /var/cache/yunohost/appconfbackup/original_${file_path_base64} $file >&2 || true
                 fi
@@ -412,7 +410,7 @@ ynh_delete_file_checksum() {
 #
 ynh_backup_archive_exists() {
     yunohost backup list --output-as json --quiet \
-        | jq -e --arg archive "$1" '.archives | index($archive)' >/dev/null
+        | jq -e --arg archive "$1" '.archives | index($archive)' > /dev/null
 }
 
 # Make a backup in case of failed upgrade
@@ -455,7 +453,7 @@ ynh_backup_before_upgrade() {
             # If the backup succeeded, remove the previous backup
             if ynh_backup_archive_exists "$app_bck-pre-upgrade$old_backup_number"; then
                 # Remove the previous backup only if it exists
-                yunohost backup delete $app_bck-pre-upgrade$old_backup_number >/dev/null
+                yunohost backup delete $app_bck-pre-upgrade$old_backup_number > /dev/null
             fi
         else
             ynh_die --message="Backup failed, the upgrade process was aborted."
@@ -494,8 +492,7 @@ ynh_restore_upgradebackup() {
             yunohost app remove $app
             # Restore the backup
             yunohost backup restore $app_bck-pre-upgrade$backup_number --apps $app --force --debug
-            if [[ -d /etc/yunohost/apps/$app ]]
-            then
+            if [[ -d /etc/yunohost/apps/$app ]]; then
                 ynh_die --message="The app was restored to the way it was before the failed upgrade."
             else
                 ynh_die --message="Uhoh ... Yunohost failed to restore the app to the way it was before the failed upgrade :|"
diff --git a/helpers/helpers.v1.d/config b/helpers/helpers.v1.d/config
index e36897d82..b0e7863b9 100644
--- a/helpers/helpers.v1.d/config
+++ b/helpers/helpers.v1.d/config
@@ -6,11 +6,11 @@ _ynh_app_config_get_one() {
     local bind="$3"
     local getter="get__${short_setting}"
     # Get value from getter if exists
-    if type -t $getter 2>/dev/null | grep -q '^function$' 2>/dev/null; then
+    if type -t $getter 2> /dev/null | grep -q '^function$' 2> /dev/null; then
         old[$short_setting]="$($getter)"
         formats[${short_setting}]="yaml"
 
-    elif [[ "$bind" == *"("* ]] && type -t "get__${bind%%(*}" 2>/dev/null | grep -q '^function$' 2>/dev/null; then
+    elif [[ "$bind" == *"("* ]] && type -t "get__${bind%%(*}" 2> /dev/null | grep -q '^function$' 2> /dev/null; then
         old[$short_setting]="$("get__${bind%%(*}" $short_setting $type $bind)"
         formats[${short_setting}]="yaml"
 
@@ -22,7 +22,7 @@ _ynh_app_config_get_one() {
         if [[ "$bind" == "settings" ]]; then
             ynh_die --message="File '${short_setting}' can't be stored in settings"
         fi
-        old[$short_setting]="$(ls "$bind" 2>/dev/null || echo YNH_NULL)"
+        old[$short_setting]="$(ls "$bind" 2> /dev/null || echo YNH_NULL)"
         file_hash[$short_setting]="true"
 
     # Get multiline text from settings or from a full file
@@ -32,7 +32,7 @@ _ynh_app_config_get_one() {
         elif [[ "$bind" == *":"* ]]; then
             ynh_die --message="For technical reasons, multiline text '${short_setting}' can't be stored automatically  in a variable file, you have to create custom getter/setter"
         else
-            old[$short_setting]="$(cat "$bind" 2>/dev/null || echo YNH_NULL)"
+            old[$short_setting]="$(cat "$bind" 2> /dev/null || echo YNH_NULL)"
         fi
 
     # Get value from a kind of key/value file
@@ -59,10 +59,10 @@ _ynh_app_config_apply_one() {
     local type="${types[$short_setting]}"
     if [ "${changed[$short_setting]}" == "true" ]; then
         # Apply setter if exists
-        if type -t $setter 2>/dev/null | grep -q '^function$' 2>/dev/null; then
+        if type -t $setter 2> /dev/null | grep -q '^function$' 2> /dev/null; then
             $setter
 
-        elif [[ "$bind" == *"("* ]] && type -t "set__${bind%%(*}" 2>/dev/null | grep -q '^function$' 2>/dev/null; then
+        elif [[ "$bind" == *"("* ]] && type -t "set__${bind%%(*}" 2> /dev/null | grep -q '^function$' 2> /dev/null; then
             "set__${bind%%(*}" $short_setting $type $bind
 
         elif [[ "$bind" == "null" ]]; then
@@ -100,7 +100,7 @@ _ynh_app_config_apply_one() {
             fi
             local bind_file="$bind"
             ynh_backup_if_checksum_is_different --file="$bind_file"
-            echo "${!short_setting}" >"$bind_file"
+            echo "${!short_setting}" > "$bind_file"
             ynh_store_file_checksum --file="$bind_file" --update_only
             ynh_print_info --message="File '$bind_file' overwritten with the content provided in question '${short_setting}'"
 
@@ -130,7 +130,7 @@ _ynh_app_config_apply_one() {
 _ynh_app_config_get() {
     for line in $YNH_APP_CONFIG_PANEL_OPTIONS_TYPES_AND_BINDS; do
         # Split line into short_setting, type and bind
-        IFS='|' read short_setting type bind <<<"$line"
+        IFS='|' read short_setting type bind <<< "$line"
         binds[${short_setting}]="$bind"
         types[${short_setting}]="$type"
         file_hash[${short_setting}]=""
@@ -206,9 +206,9 @@ _ynh_app_config_validate() {
     for short_setting in "${!old[@]}"; do
         [[ "${changed[$short_setting]}" == "false" ]] && continue
         local result=""
-        if type -t validate__$short_setting | grep -q '^function$' 2>/dev/null; then
+        if type -t validate__$short_setting | grep -q '^function$' 2> /dev/null; then
             result="$(validate__$short_setting)"
-        elif [[ "$bind" == *"("* ]] && type -t "validate__${bind%%(*}" 2>/dev/null | grep -q '^function$' 2>/dev/null; then
+        elif [[ "$bind" == *"("* ]] && type -t "validate__${bind%%(*}" 2> /dev/null | grep -q '^function$' 2> /dev/null; then
             "validate__${bind%%(*}" $short_setting
         fi
         if [ -n "$result" ]; then
@@ -263,7 +263,7 @@ ynh_app_config_apply() {
 ynh_app_action_run() {
     local runner="run__$1"
     # Get value from getter if exists
-    if type -t "$runner" 2>/dev/null | grep -q '^function$' 2>/dev/null; then
+    if type -t "$runner" 2> /dev/null | grep -q '^function$' 2> /dev/null; then
         $runner
         #ynh_return "result:"
         #ynh_return "$(echo "${result}" | sed 's/^/  /g')"
@@ -281,22 +281,23 @@ ynh_app_config_run() {
     declare -Ag formats=()
 
     case $1 in
-    show)
-        ynh_app_config_get
-        ynh_app_config_show
-        ;;
-    apply)
-        max_progression=4
-        ynh_script_progression --message="Reading config panel description and current configuration..."
-        ynh_app_config_get
+        show)
+            ynh_app_config_get
+            ynh_app_config_show
+            ;;
+        apply)
+            max_progression=4
+            ynh_script_progression --message="Reading config panel description and current configuration..."
+            ynh_app_config_get
 
-        ynh_app_config_validate
+            ynh_app_config_validate
 
-        ynh_script_progression --message="Applying the new configuration..."
-        ynh_app_config_apply
-        ynh_script_progression --message="Configuration of $app completed" --last
-        ;;
-    *)
-        ynh_app_action_run $1
+            ynh_script_progression --message="Applying the new configuration..."
+            ynh_app_config_apply
+            ynh_script_progression --message="Configuration of $app completed" --last
+            ;;
+        *)
+            ynh_app_action_run $1
+            ;;
     esac
 }
diff --git a/helpers/helpers.v1.d/fail2ban b/helpers/helpers.v1.d/fail2ban
index db54805fc..ae4ce8650 100644
--- a/helpers/helpers.v1.d/fail2ban
+++ b/helpers/helpers.v1.d/fail2ban
@@ -82,7 +82,7 @@ port = __PORTS__
 filter = __APP__
 logpath = __LOGPATH__
 maxretry = __MAX_RETRY__
-" >"$YNH_APP_BASEDIR/conf/f2b_jail.conf"
+" > "$YNH_APP_BASEDIR/conf/f2b_jail.conf"
 
         echo "
 [INCLUDES]
@@ -90,7 +90,7 @@ before = common.conf
 [Definition]
 failregex = __FAILREGEX__
 ignoreregex =
-" >"$YNH_APP_BASEDIR/conf/f2b_filter.conf"
+" > "$YNH_APP_BASEDIR/conf/f2b_filter.conf"
     fi
 
     ynh_add_config --template="f2b_jail.conf" --destination="/etc/fail2ban/jail.d/$app.conf"
diff --git a/helpers/helpers.v1.d/getopts b/helpers/helpers.v1.d/getopts
index 9fd84f82e..63c0084cf 100644
--- a/helpers/helpers.v1.d/getopts
+++ b/helpers/helpers.v1.d/getopts
@@ -180,7 +180,7 @@ ynh_handle_getopts_args() {
             # If not, enter in legacy mode and manage the arguments as positionnal ones..
             # Dot not echo, to prevent to go through a helper output. But print only in the log.
             set -x
-            echo "! Helper used in legacy mode !" >/dev/null
+            echo "! Helper used in legacy mode !" > /dev/null
             set +x
             local i
             for i in $(seq 0 $((${#arguments[@]} - 1))); do
diff --git a/helpers/helpers.v1.d/go b/helpers/helpers.v1.d/go
index 86b2b83a8..ce74c48dc 100644
--- a/helpers/helpers.v1.d/go
+++ b/helpers/helpers.v1.d/go
@@ -1,11 +1,11 @@
 #!/bin/bash
 
 ynh_go_try_bash_extension() {
-  if [ -x src/configure ]; then
-    src/configure && make -C src || {
-      ynh_print_info --message="Optional bash extension failed to build, but things will still work normally."
-    }
-  fi
+    if [ -x src/configure ]; then
+        src/configure && make -C src || {
+            ynh_print_info --message="Optional bash extension failed to build, but things will still work normally."
+        }
+    fi
 }
 
 goenv_install_dir="/opt/goenv"
@@ -51,7 +51,7 @@ export GOENV_ROOT="$goenv_install_dir"
 # usage: ynh_use_go
 #
 # Requires YunoHost version 3.2.2 or higher.
-ynh_use_go () {
+ynh_use_go() {
     go_version=$(ynh_app_setting_get --app=$app --key=go_version)
 
     # Get the absolute path of this version of Go
@@ -73,7 +73,7 @@ ynh_use_go () {
 
     # Sets the local application-specific Go version
     pushd $install_dir
-        $goenv_install_dir/bin/goenv local $go_version
+    $goenv_install_dir/bin/goenv local $go_version
     popd
 }
 
@@ -93,10 +93,10 @@ ynh_use_go () {
 # | arg: -v, --go_version= - Version of go to install.
 #
 # Requires YunoHost version 3.2.2 or higher.
-ynh_install_go () {
+ynh_install_go() {
     # Declare an array to define the options of this helper.
     local legacy_args=v
-    local -A args_array=( [v]=go_version= )
+    local -A args_array=([v]=go_version=)
     local go_version
     # Manage arguments with getopts
     ynh_handle_getopts_args "$@"
@@ -113,34 +113,34 @@ ynh_install_go () {
     # Install or update goenv
     mkdir -p $goenv_install_dir
     pushd "$goenv_install_dir"
-        if ! [ -x "$goenv_install_dir/bin/goenv" ]; then
-            ynh_print_info --message="Downloading goenv..."
-            git init -q
-            git remote add origin https://github.com/syndbg/goenv.git 
-        else
-            ynh_print_info --message="Updating goenv..."
-        fi
-        git fetch -q --tags --prune origin
-        local git_latest_tag=$(git describe --tags "$(git rev-list --tags --max-count=1)")
-        git checkout -q "$git_latest_tag"
-        ynh_go_try_bash_extension
-        goenv=$goenv_install_dir/bin/goenv
+    if ! [ -x "$goenv_install_dir/bin/goenv" ]; then
+        ynh_print_info --message="Downloading goenv..."
+        git init -q
+        git remote add origin https://github.com/syndbg/goenv.git
+    else
+        ynh_print_info --message="Updating goenv..."
+    fi
+    git fetch -q --tags --prune origin
+    local git_latest_tag=$(git describe --tags "$(git rev-list --tags --max-count=1)")
+    git checkout -q "$git_latest_tag"
+    ynh_go_try_bash_extension
+    goenv=$goenv_install_dir/bin/goenv
     popd
 
     # Install or update xxenv-latest
     goenv_latest_dir="$goenv_install_dir/plugins/xxenv-latest"
     mkdir -p "$goenv_latest_dir"
     pushd "$goenv_latest_dir"
-        if ! [ -x "$goenv_latest_dir/bin/goenv-latest" ]; then
-            ynh_print_info --message="Downloading xxenv-latest..."
-            git init -q
-            git remote add origin https://github.com/momo-lab/xxenv-latest.git 
-        else
-            ynh_print_info --message="Updating xxenv-latest..."
-        fi
-        git fetch -q --tags --prune origin
-        local git_latest_tag=$(git describe --tags "$(git rev-list --tags --max-count=1)")
-        git checkout -q "$git_latest_tag"
+    if ! [ -x "$goenv_latest_dir/bin/goenv-latest" ]; then
+        ynh_print_info --message="Downloading xxenv-latest..."
+        git init -q
+        git remote add origin https://github.com/momo-lab/xxenv-latest.git
+    else
+        ynh_print_info --message="Updating xxenv-latest..."
+    fi
+    git fetch -q --tags --prune origin
+    local git_latest_tag=$(git describe --tags "$(git rev-list --tags --max-count=1)")
+    git checkout -q "$git_latest_tag"
     popd
 
     # Enable caching
@@ -167,7 +167,7 @@ ynh_install_go () {
     ynh_cleanup_go
 
     # Set environment for Go users
-    echo  "#goenv
+    echo "#goenv
 export GOENV_ROOT=$goenv_install_dir
 export PATH=\"$goenv_install_dir/bin:$PATH\"
 eval \"\$(goenv init -)\"
@@ -182,7 +182,7 @@ eval \"\$(goenv init -)\"
 # This helper will also cleanup Go versions
 #
 # usage: ynh_remove_go
-ynh_remove_go () {
+ynh_remove_go() {
     local go_version=$(ynh_app_setting_get --app="$app" --key="go_version")
 
     # Load goenv path in PATH
@@ -205,34 +205,29 @@ ynh_remove_go () {
 # If no app uses Go, goenv will be also removed.
 #
 # usage: ynh_cleanup_go
-ynh_cleanup_go () {
+ynh_cleanup_go() {
 
     # List required Go versions
     local installed_apps=$(yunohost app list --output-as json --quiet | jq -r .apps[].id)
     local required_go_versions=""
-    for installed_app in $installed_apps
-    do
+    for installed_app in $installed_apps; do
         local installed_app_go_version=$(ynh_app_setting_get --app=$installed_app --key="go_version")
-        if [[ $installed_app_go_version ]]
-        then
+        if [[ $installed_app_go_version ]]; then
             required_go_versions="${installed_app_go_version}\n${required_go_versions}"
         fi
     done
 
     # Remove no more needed Go versions
     local installed_go_versions=$(goenv versions --bare --skip-aliases | grep -Ev '/')
-    for installed_go_version in $installed_go_versions
-    do
-        if ! `echo ${required_go_versions} | grep "${installed_go_version}" 1>/dev/null 2>&1`
-        then
+    for installed_go_version in $installed_go_versions; do
+        if ! $(echo ${required_go_versions} | grep "${installed_go_version}" 1> /dev/null 2>&1); then
             ynh_print_info --message="Removing of Go-$installed_go_version"
             $goenv_install_dir/bin/goenv uninstall --force "$installed_go_version"
         fi
     done
 
     # If none Go version is required
-    if [[ ! $required_go_versions ]]
-    then
+    if [[ ! $required_go_versions ]]; then
         # Remove goenv environment configuration
         ynh_print_info --message="Removing of goenv"
         ynh_secure_remove --file="$goenv_install_dir"
diff --git a/helpers/helpers.v1.d/logging b/helpers/helpers.v1.d/logging
index 1b3cd7760..f7873928c 100644
--- a/helpers/helpers.v1.d/logging
+++ b/helpers/helpers.v1.d/logging
@@ -93,8 +93,7 @@ ynh_exec_err() {
     # Boring legacy handling for when people calls ynh_exec_* wrapping the command in quotes,
     # (because in the past eval was used) ...
     # we detect this by checking that there's no 2nd arg, and $1 contains a space
-    if [[ "$#" -eq 1 ]] && [[ "$1" == *" "* ]]
-    then
+    if [[ "$#" -eq 1 ]] && [[ "$1" == *" "* ]]; then
         ynh_print_err --message="$(eval $@)"
     else
         # Note that "$@" is used and not $@, c.f. https://unix.stackexchange.com/a/129077
@@ -114,8 +113,7 @@ ynh_exec_warn() {
     # Boring legacy handling for when people calls ynh_exec_* wrapping the command in quotes,
     # (because in the past eval was used) ...
     # we detect this by checking that there's no 2nd arg, and $1 contains a space
-    if [[ "$#" -eq 1 ]] && [[ "$1" == *" "* ]]
-    then
+    if [[ "$#" -eq 1 ]] && [[ "$1" == *" "* ]]; then
         ynh_print_warn --message="$(eval $@)"
     else
         # Note that "$@" is used and not $@, c.f. https://unix.stackexchange.com/a/129077
@@ -135,8 +133,7 @@ ynh_exec_warn_less() {
     # Boring legacy handling for when people calls ynh_exec_* wrapping the command in quotes,
     # (because in the past eval was used) ...
     # we detect this by checking that there's no 2nd arg, and $1 contains a space
-    if [[ "$#" -eq 1 ]] && [[ "$1" == *" "* ]]
-    then
+    if [[ "$#" -eq 1 ]] && [[ "$1" == *" "* ]]; then
         eval $@ 2>&1
     else
         # Note that "$@" is used and not $@, c.f. https://unix.stackexchange.com/a/129077
@@ -156,8 +153,7 @@ ynh_exec_quiet() {
     # Boring legacy handling for when people calls ynh_exec_* wrapping the command in quotes,
     # (because in the past eval was used) ...
     # we detect this by checking that there's no 2nd arg, and $1 contains a space
-    if [[ "$#" -eq 1 ]] && [[ "$1" == *" "* ]]
-    then
+    if [[ "$#" -eq 1 ]] && [[ "$1" == *" "* ]]; then
         eval $@ > /dev/null
     else
         # Note that "$@" is used and not $@, c.f. https://unix.stackexchange.com/a/129077
@@ -177,8 +173,7 @@ ynh_exec_fully_quiet() {
     # Boring legacy handling for when people calls ynh_exec_* wrapping the command in quotes,
     # (because in the past eval was used) ...
     # we detect this by checking that there's no 2nd arg, and $1 contains a space
-    if [[ "$#" -eq 1 ]] && [[ "$1" == *" "* ]]
-    then
+    if [[ "$#" -eq 1 ]] && [[ "$1" == *" "* ]]; then
         eval $@ > /dev/null 2>&1
     else
         # Note that "$@" is used and not $@, c.f. https://unix.stackexchange.com/a/129077
@@ -199,7 +194,7 @@ ynh_exec_and_print_stderr_only_if_error() {
     rc=0
     # Note that "$@" is used and not $@, c.f. https://unix.stackexchange.com/a/129077
     "$@" 2> "$logfile" || rc="$?"
-    if (( rc != 0 )); then
+    if ((rc != 0)); then
         ynh_exec_warn cat "$logfile"
         ynh_secure_remove "$logfile"
         return "$rc"
@@ -216,7 +211,7 @@ ynh_exec_and_print_stderr_only_if_error() {
 #
 # Requires YunoHost version 3.2.0 or higher.
 ynh_print_OFF() {
-    exec {BASH_XTRACEFD}>/dev/null
+    exec {BASH_XTRACEFD}> /dev/null
 }
 
 # Restore the logging after ynh_print_OFF
@@ -229,7 +224,7 @@ ynh_print_OFF() {
 ynh_print_ON() {
     exec {BASH_XTRACEFD}>&1
     # Print an echo only for the log, to be able to know that ynh_print_ON has been called.
-    echo ynh_print_ON >/dev/null
+    echo ynh_print_ON > /dev/null
 }
 
 # Initial definitions for ynh_script_progression
@@ -298,8 +293,8 @@ ynh_script_progression() {
         local weight_values=$(($(echo "$weight_valuesA" "$weight_valuesB" | grep -v -E '^\s*$' | tr '\n' '+' | sed 's/+$/+0/g')))
 
         # max_progression is a total number of calls to this helper.
-        #   Less the number of calls with a weight value.
-        #   Plus the total of weight values
+        #  Less the number of calls with a weight value.
+        #  Plus the total of weight values
         max_progression=$(($helper_calls - $weight_calls + $weight_values))
     fi
 
@@ -329,7 +324,7 @@ ynh_script_progression() {
 
     local print_exec_time=""
     if [ $time -eq 1 ] && [ "$exec_time" -gt 10 ]; then
-        print_exec_time=" [$(bc <<< "scale=1; $exec_time / 60" ) minutes]"
+        print_exec_time=" [$(bc <<< "scale=1; $exec_time / 60") minutes]"
     fi
 
     ynh_print_info "[$progression_bar] > ${message}${print_exec_time}"
@@ -343,5 +338,5 @@ ynh_script_progression() {
 #
 # Requires YunoHost version 3.6.0 or higher.
 ynh_return() {
-    echo "$1" >>"$YNH_STDRETURN"
+    echo "$1" >> "$YNH_STDRETURN"
 }
diff --git a/helpers/helpers.v1.d/logrotate b/helpers/helpers.v1.d/logrotate
index efc1137c1..1be98d220 100644
--- a/helpers/helpers.v1.d/logrotate
+++ b/helpers/helpers.v1.d/logrotate
@@ -16,11 +16,9 @@ ynh_use_logrotate() {
 
     # Stupid patch to ignore legacy --non-append and --nonappend
     # which was never properly understood and improperly used and kind of bullshit
-    local all_args=( ${@} )
-    for I in $(seq 0 $(($# - 1)))
-    do
-        if [[ "${all_args[$I]}" == "--non-append" ]] || [[ "${all_args[$I]}" == "--nonappend" ]]
-        then
+    local all_args=(${@})
+    for I in $(seq 0 $(($# - 1))); do
+        if [[ "${all_args[$I]}" == "--non-append" ]] || [[ "${all_args[$I]}" == "--nonappend" ]]; then
             unset all_args[$I]
         fi
     done
@@ -43,8 +41,7 @@ ynh_use_logrotate() {
     fi
     set +o noglob
 
-    for stuff in $logfile
-    do
+    for stuff in $logfile; do
         mkdir --parents $(dirname "$stuff")
     done
 
@@ -54,7 +51,7 @@ ynh_use_logrotate() {
     fi
 
     local tempconf="$(mktemp)"
-    cat << EOF >$tempconf
+    cat << EOF > $tempconf
 $logfile {
     # Rotate if the logfile exceeds 100Mo
     size 100M
@@ -76,8 +73,7 @@ $logfile {
 }
 EOF
 
-    if [[ "$FIRST_CALL_TO_LOGROTATE" == "true" ]]
-    then
+    if [[ "$FIRST_CALL_TO_LOGROTATE" == "true" ]]; then
         cat $tempconf > /etc/logrotate.d/$app
     else
         cat $tempconf >> /etc/logrotate.d/$app
diff --git a/helpers/helpers.v1.d/mongodb b/helpers/helpers.v1.d/mongodb
index ae4cf812a..1e8dc944b 100644
--- a/helpers/helpers.v1.d/mongodb
+++ b/helpers/helpers.v1.d/mongodb
@@ -6,20 +6,20 @@
 # example: ynh_mongo_exec --command="db.getMongo().getDBNames().indexOf(\"wekan\")"
 #
 # usage: ynh_mongo_exec [--user=user] [--password=password] [--authenticationdatabase=authenticationdatabase] [--database=database] [--host=host] [--port=port] --command="command" [--eval]
-# | arg: -u, --user=                    - The user name to connect as
-# | arg: -p, --password=                - The user password
-# | arg: -d, --authenticationdatabase=  - The authenticationdatabase to connect to
-# | arg: -d, --database=                - The database to connect to
-# | arg: -h, --host=                    - The host to connect to
-# | arg: -P, --port=                    - The port to connect to
-# | arg: -c, --command=                 - The command to evaluate
-# | arg: -e, --eval                     - Evaluate instead of execute the command.
+# | arg: -u, --user=                        - The user name to connect as
+# | arg: -p, --password=                    - The user password
+# | arg: -d, --authenticationdatabase=      - The authenticationdatabase to connect to
+# | arg: -d, --database=                    - The database to connect to
+# | arg: -h, --host=                        - The host to connect to
+# | arg: -P, --port=                        - The port to connect to
+# | arg: -c, --command=                     - The command to evaluate
+# | arg: -e, --eval                         - Evaluate instead of execute the command.
 #
 #
 ynh_mongo_exec() {
     # Declare an array to define the options of this helper.
     local legacy_args=upadhPce
-    local -A args_array=( [u]=user= [p]=password= [a]=authenticationdatabase= [d]=database= [h]=host= [P]=port= [c]=command= [e]=eval )
+    local -A args_array=([u]=user= [p]=password= [a]=authenticationdatabase= [d]=database= [h]=host= [P]=port= [c]=command= [e]=eval)
     local user
     local password
     local authenticationdatabase
@@ -39,19 +39,16 @@ ynh_mongo_exec() {
     eval=${eval:-0}
 
     # If user is provided
-    if [ -n "$user" ]
-    then
+    if [ -n "$user" ]; then
         user="--username=$user"
 
         # If password is provided
-        if [ -n "$password" ]
-        then
+        if [ -n "$password" ]; then
             password="--password=$password"
         fi
 
         # If authenticationdatabase is provided
-        if [ -n "$authenticationdatabase" ]
-        then
+        if [ -n "$authenticationdatabase" ]; then
             authenticationdatabase="--authenticationDatabase=$authenticationdatabase"
         else
             authenticationdatabase="--authenticationDatabase=admin"
@@ -62,37 +59,32 @@ ynh_mongo_exec() {
     fi
 
     # If host is provided
-    if [ -n "$host" ]
-    then
+    if [ -n "$host" ]; then
         host="--host=$host"
     fi
 
     # If port is provided
-    if [ -n "$port" ]
-    then
+    if [ -n "$port" ]; then
         port="--port=$port"
     fi
 
     # If eval is not provided
-    if [ $eval -eq 0 ]
-    then
+    if [ $eval -eq 0 ]; then
         # If database is provided
-        if [ -n "$database" ]
-        then
+        if [ -n "$database" ]; then
             database="use $database"
         else
             database=""
         fi
 
-        mongosh --quiet --username $user --password $password --authenticationDatabase $authenticationdatabase --host $host --port $port <<EOF
+        mongosh --quiet --username $user --password $password --authenticationDatabase $authenticationdatabase --host $host --port $port << EOF
 $database
 ${command}
 quit()
 EOF
     else
         # If database is provided
-        if [ -n "$database" ]
-        then
+        if [ -n "$database" ]; then
             database="$database"
         else
             database=""
@@ -116,7 +108,7 @@ EOF
 ynh_mongo_drop_db() {
     # Declare an array to define the options of this helper.
     local legacy_args=d
-    local -A args_array=( [d]=database= )
+    local -A args_array=([d]=database=)
     local database
     # Manage arguments with getopts
     ynh_handle_getopts_args "$@"
@@ -136,7 +128,7 @@ ynh_mongo_drop_db() {
 ynh_mongo_dump_db() {
     # Declare an array to define the options of this helper.
     local legacy_args=d
-    local -A args_array=( [d]=database= )
+    local -A args_array=([d]=database=)
     local database
     # Manage arguments with getopts
     ynh_handle_getopts_args "$@"
@@ -157,7 +149,7 @@ ynh_mongo_dump_db() {
 ynh_mongo_create_user() {
     # Declare an array to define the options of this helper.
     local legacy_args=unp
-    local -A args_array=( [u]=db_user= [n]=db_name= [p]=db_pwd= )
+    local -A args_array=([u]=db_user= [n]=db_name= [p]=db_pwd=)
     local db_user
     local db_name
     local db_pwd
@@ -186,8 +178,7 @@ ynh_mongo_database_exists() {
     # Manage arguments with getopts
     ynh_handle_getopts_args "$@"
 
-    if [ $(ynh_mongo_exec --command='db.getMongo().getDBNames().indexOf("'${database}'")' --eval) -lt 0 ]
-    then
+    if [ $(ynh_mongo_exec --command='db.getMongo().getDBNames().indexOf("'${database}'")' --eval) -lt 0 ]; then
         return 1
     else
         return 0
@@ -205,7 +196,7 @@ ynh_mongo_database_exists() {
 ynh_mongo_restore_db() {
     # Declare an array to define the options of this helper.
     local legacy_args=d
-    local -A args_array=( [d]=database= )
+    local -A args_array=([d]=database=)
     local database
     # Manage arguments with getopts
     ynh_handle_getopts_args "$@"
@@ -225,7 +216,7 @@ ynh_mongo_restore_db() {
 ynh_mongo_drop_user() {
     # Declare an array to define the options of this helper.
     local legacy_args=un
-    local -A args_array=( [u]=db_user= [n]=db_name= )
+    local -A args_array=([u]=db_user= [n]=db_name=)
     local db_user
     local db_name
     # Manage arguments with getopts
@@ -248,7 +239,7 @@ ynh_mongo_drop_user() {
 ynh_mongo_setup_db() {
     # Declare an array to define the options of this helper.
     local legacy_args=unp
-    local -A args_array=( [u]=db_user= [n]=db_name= [p]=db_pwd= )
+    local -A args_array=([u]=db_user= [n]=db_name= [p]=db_pwd=)
     local db_user
     local db_name
     db_pwd=""
@@ -276,14 +267,14 @@ ynh_mongo_setup_db() {
 ynh_mongo_remove_db() {
     # Declare an array to define the options of this helper.
     local legacy_args=un
-    local -A args_array=( [u]=db_user= [n]=db_name= )
+    local -A args_array=([u]=db_user= [n]=db_name=)
     local db_user
     local db_name
     # Manage arguments with getopts
     ynh_handle_getopts_args "$@"
 
-    if ynh_mongo_database_exists --database=$db_name; then  # Check if the database exists
-        ynh_mongo_drop_db --database=$db_name  # Remove the database
+    if ynh_mongo_database_exists --database=$db_name; then # Check if the database exists
+        ynh_mongo_drop_db --database=$db_name              # Remove the database
     else
         ynh_print_warn --message="Database $db_name not found"
     fi
@@ -311,13 +302,13 @@ ynh_install_mongo() {
     local mongo_debian_release=$(ynh_get_debian_release)
 
     if [[ "$(grep '^flags' /proc/cpuinfo | uniq)" != *"avx"* && "$mongo_version" != "4.4" ]]; then
-    ynh_print_warn --message="Installing Mongo 4.4 as $mongo_version is not compatible with your cpu (see https://docs.mongodb.com/manual/administration/production-notes/#x86_64)."
-    mongo_version="4.4"
-  fi
-  if [[ "$mongo_version" == "4.4" ]]; then
-    ynh_print_warn --message="Switched to buster install as Mongo 4.4 is not compatible with $mongo_debian_release."
-    mongo_debian_release=buster
-  fi
+        ynh_print_warn --message="Installing Mongo 4.4 as $mongo_version is not compatible with your cpu (see https://docs.mongodb.com/manual/administration/production-notes/#x86_64)."
+        mongo_version="4.4"
+    fi
+    if [[ "$mongo_version" == "4.4" ]]; then
+        ynh_print_warn --message="Switched to buster install as Mongo 4.4 is not compatible with $mongo_debian_release."
+        mongo_debian_release=buster
+    fi
 
     ynh_install_extra_app_dependencies --repo="deb http://repo.mongodb.org/apt/debian $mongo_debian_release/mongodb-org/$mongo_version main" --package="mongodb-org mongodb-org-server mongodb-org-tools mongodb-mongosh" --key="https://www.mongodb.org/static/pgp/server-$mongo_version.asc"
     mongodb_servicename=mongod
@@ -343,8 +334,7 @@ ynh_install_mongo() {
 #
 ynh_remove_mongo() {
     # Only remove the mongodb service if it is not installed.
-    if ! ynh_package_is_installed --package="mongodb*"
-    then
+    if ! ynh_package_is_installed --package="mongodb*"; then
         ynh_print_info --message="Removing MongoDB service..."
         mongodb_servicename=mongod
         # Remove the mongodb service
diff --git a/helpers/helpers.v1.d/mysql b/helpers/helpers.v1.d/mysql
index 93479ce3c..f4b1d6a06 100644
--- a/helpers/helpers.v1.d/mysql
+++ b/helpers/helpers.v1.d/mysql
@@ -47,7 +47,7 @@ ynh_mysql_execute_as_root() {
         database="--database=$database"
     fi
 
-    mysql -B "$database" <<<"$sql"
+    mysql -B "$database" <<< "$sql"
 }
 
 # Execute a command from a file as root user
@@ -71,7 +71,7 @@ ynh_mysql_execute_file_as_root() {
         database="--database=$database"
     fi
 
-    mysql -B "$database" <"$file"
+    mysql -B "$database" < "$file"
 }
 
 # Create a database and grant optionnaly privilegies to a user
diff --git a/helpers/helpers.v1.d/network b/helpers/helpers.v1.d/network
index bed9dd402..a2c5e4c91 100644
--- a/helpers/helpers.v1.d/network
+++ b/helpers/helpers.v1.d/network
@@ -79,7 +79,7 @@ ynh_validate_ip() {
 
     [ "$family" == "4" ] || [ "$family" == "6" ] || return 1
 
-    python3 /dev/stdin <<EOF
+    python3 /dev/stdin << EOF
 import socket
 import sys
 family = { "4" : socket.AF_INET, "6" : socket.AF_INET6 }
diff --git a/helpers/helpers.v1.d/nginx b/helpers/helpers.v1.d/nginx
index 600c70a49..78a2002aa 100644
--- a/helpers/helpers.v1.d/nginx
+++ b/helpers/helpers.v1.d/nginx
@@ -43,7 +43,6 @@ ynh_remove_nginx_config() {
     ynh_systemd_action --service_name=nginx --action=reload
 }
 
-
 # Regen the nginx config in a change url context
 #
 # usage: ynh_change_url_nginx_config
@@ -53,7 +52,7 @@ ynh_change_url_nginx_config() {
 
     # Make a backup of the original NGINX config file if manually modified
     # (nb: this is possibly different from the same instruction called by
-    # ynh_add_config inside ynh_add_nginx_config because the path may have 
+    # ynh_add_config inside ynh_add_nginx_config because the path may have
     # changed if we're changing the domain too...)
     local old_nginx_conf_path=/etc/nginx/conf.d/$old_domain.d/$app.conf
     ynh_backup_if_checksum_is_different --file="$old_nginx_conf_path"
diff --git a/helpers/helpers.v1.d/permission b/helpers/helpers.v1.d/permission
index 6c2fa7ef8..c81c16fa9 100644
--- a/helpers/helpers.v1.d/permission
+++ b/helpers/helpers.v1.d/permission
@@ -174,7 +174,7 @@ ynh_permission_exists() {
     ynh_handle_getopts_args "$@"
 
     yunohost user permission list "$app" --output-as json --quiet \
-        | jq -e --arg perm "$app.$permission" '.permissions[$perm]' >/dev/null
+        | jq -e --arg perm "$app.$permission" '.permissions[$perm]' > /dev/null
 }
 
 # Redefine the url associated to a permission
@@ -342,7 +342,7 @@ ynh_permission_has_user() {
     # Check both allowed and corresponding_users sections in the json
     for section in "allowed" "corresponding_users"; do
         if yunohost user permission info "$app.$permission" --output-as json --quiet \
-            | jq -e --arg user $user --arg section $section '.[$section] | index($user)' >/dev/null; then
+            | jq -e --arg user $user --arg section $section '.[$section] | index($user)' > /dev/null; then
             return 0
         fi
     done
diff --git a/helpers/helpers.v1.d/php b/helpers/helpers.v1.d/php
index b0b573604..1052de330 100644
--- a/helpers/helpers.v1.d/php
+++ b/helpers/helpers.v1.d/php
@@ -11,19 +11,19 @@ YNH_PHP_VERSION=${YNH_PHP_VERSION:-$YNH_DEFAULT_PHP_VERSION}
 #
 # Case 1 (recommended) : your provided a snippet conf/extra_php-fpm.conf
 #
-# The actual PHP configuration will be automatically generated, 
+# The actual PHP configuration will be automatically generated,
 # and your extra_php-fpm.conf will be appended (typically contains PHP upload limits)
 #
 # The resulting configuration will be deployed to the appropriate place, /etc/php/$phpversion/fpm/pool.d/$app.conf
 #
-# Performance-related options in the PHP conf, such as : 
+# Performance-related options in the PHP conf, such as :
 # pm.max_children, pm.start_servers, pm.min_spare_servers pm.max_spare_servers
 # are computed from two parameters called "usage" and "footprint" which can be set to low/medium/high. (cf details below)
 #
-# If you wish to tweak those, please initialize the settings `fpm_usage` and `fpm_footprint` 
+# If you wish to tweak those, please initialize the settings `fpm_usage` and `fpm_footprint`
 # *prior* to calling this helper. Otherwise, "low" will be used as a default for both values.
 #
-# Otherwise, if you want the user to have control over these, we encourage to create a config panel 
+# Otherwise, if you want the user to have control over these, we encourage to create a config panel
 # (which should ultimately be standardized by the core ...)
 #
 # Case 2 (deprecate) : you provided an entire conf/php-fpm.conf
@@ -33,7 +33,7 @@ YNH_PHP_VERSION=${YNH_PHP_VERSION:-$YNH_DEFAULT_PHP_VERSION}
 # The resulting configuration will be deployed to the appropriate place, /etc/php/$phpversion/fpm/pool.d/$app.conf
 #
 # ----------------------
-# 
+#
 # fpm_footprint: Memory footprint of the service (low/medium/high).
 # low    - Less than 20 MB of RAM by pool.
 # medium - Between 20 MB and 40 MB of RAM by pool.
@@ -92,16 +92,14 @@ ynh_add_fpm_config() {
 
         # If no usage provided, default to the value existing in setting ... or to low
         local fpm_usage_in_setting=$(ynh_app_setting_get --app=$app --key=fpm_usage)
-        if [ -z "$usage" ]
-        then
+        if [ -z "$usage" ]; then
             usage=${fpm_usage_in_setting:-low}
             ynh_app_setting_set --app=$app --key=fpm_usage --value=$usage
         fi
 
         # If no footprint provided, default to the value existing in setting ... or to low
         local fpm_footprint_in_setting=$(ynh_app_setting_get --app=$app --key=fpm_footprint)
-        if [ -z "$footprint" ]
-        then
+        if [ -z "$footprint" ]; then
             footprint=${fpm_footprint_in_setting:-low}
             ynh_app_setting_set --app=$app --key=fpm_footprint --value=$footprint
         fi
@@ -125,8 +123,7 @@ ynh_add_fpm_config() {
         local old_php_fpm_config_dir=$(ynh_app_setting_get --app=$app --key=fpm_config_dir)
         local old_php_finalphpconf="$old_php_fpm_config_dir/pool.d/$app.conf"
 
-        if [[ -f "$old_php_finalphpconf" ]]
-        then
+        if [[ -f "$old_php_finalphpconf" ]]; then
             ynh_backup_if_checksum_is_different --file="$old_php_finalphpconf"
             ynh_remove_fpm_config
         fi
@@ -200,24 +197,24 @@ pm = __PHP_PM__
 pm.max_children = __PHP_MAX_CHILDREN__
 pm.max_requests = 500
 request_terminate_timeout = 1d
-" >"$phpfpm_path"
+" > "$phpfpm_path"
 
         if [ "$php_pm" = "dynamic" ]; then
             echo "
 pm.start_servers = __PHP_START_SERVERS__
 pm.min_spare_servers = __PHP_MIN_SPARE_SERVERS__
 pm.max_spare_servers = __PHP_MAX_SPARE_SERVERS__
-" >>"$phpfpm_path"
+" >> "$phpfpm_path"
 
         elif [ "$php_pm" = "ondemand" ]; then
             echo "
 pm.process_idle_timeout = 10s
-" >>"$phpfpm_path"
+" >> "$phpfpm_path"
         fi
 
         # Concatene the extra config.
         if [ -e $YNH_APP_BASEDIR/conf/extra_php-fpm.conf ]; then
-            cat $YNH_APP_BASEDIR/conf/extra_php-fpm.conf >>"$phpfpm_path"
+            cat $YNH_APP_BASEDIR/conf/extra_php-fpm.conf >> "$phpfpm_path"
         fi
     fi
 
@@ -238,7 +235,7 @@ pid = /run/php/php__PHPVERSION__-fpm-__APP__.pid
 error_log = /var/log/php/fpm-php.__APP__.log
 syslog.ident = php-fpm-__APP__
 include = __FINALPHPCONF__
-" >$YNH_APP_BASEDIR/conf/php-fpm-$app.conf
+" > $YNH_APP_BASEDIR/conf/php-fpm-$app.conf
 
         ynh_add_config --template="php-fpm-$app.conf" --destination="$globalphpconf"
 
@@ -255,7 +252,7 @@ ExecReload=/bin/kill -USR2 \$MAINPID
 
 [Install]
 WantedBy=multi-user.target
-" >$YNH_APP_BASEDIR/conf/$fpm_service
+" > $YNH_APP_BASEDIR/conf/$fpm_service
 
         # Create this dedicated PHP-FPM service
         ynh_add_systemd_config --service=$fpm_service --template=$fpm_service
@@ -267,7 +264,7 @@ WantedBy=multi-user.target
         ynh_systemd_action --service_name=$fpm_service --action=restart
     else
         # Validate that the new php conf doesn't break php-fpm entirely
-        if ! php-fpm${phpversion} --test 2>/dev/null; then
+        if ! php-fpm${phpversion} --test 2> /dev/null; then
             php-fpm${phpversion} --test || true
             ynh_secure_remove --file="$finalphpconf"
             ynh_die --message="The new configuration broke php-fpm?"
@@ -360,7 +357,7 @@ ynh_install_php() {
 # usage: ynh_remove_php
 #
 # Requires YunoHost version 3.8.1 or higher.
-ynh_remove_php () {
+ynh_remove_php() {
     ynh_remove_app_dependencies
 }
 
diff --git a/helpers/helpers.v1.d/postgresql b/helpers/helpers.v1.d/postgresql
index 35b95cd5f..82a5e4cdf 100644
--- a/helpers/helpers.v1.d/postgresql
+++ b/helpers/helpers.v1.d/postgresql
@@ -51,7 +51,7 @@ ynh_psql_execute_as_root() {
     fi
 
     ynh_psql_connect_as --user="postgres" --password="$(cat $PSQL_ROOT_PWD_FILE)" \
-        $database <<<"$sql"
+        $database <<< "$sql"
 }
 
 # Execute a command from a file as root user
@@ -76,7 +76,7 @@ ynh_psql_execute_file_as_root() {
     fi
 
     ynh_psql_connect_as --user="postgres" --password="$(cat $PSQL_ROOT_PWD_FILE)" \
-        $database <"$file"
+        $database < "$file"
 }
 
 # Create a database and grant optionnaly privilegies to a user
@@ -199,10 +199,9 @@ ynh_psql_database_exists() {
 
     # if psql is not there, we cannot check the db
     # though it could exists.
-    if ! command -v psql
-    then
-      ynh_print_err -m "PostgreSQL is not installed, impossible to check for db existence."
-      return 1
+    if ! command -v psql; then
+        ynh_print_err -m "PostgreSQL is not installed, impossible to check for db existence."
+        return 1
     elif ! sudo --login --user=postgres PGUSER="postgres" PGPASSWORD="$(cat $PSQL_ROOT_PWD_FILE)" psql -tAc "SELECT datname FROM pg_database WHERE datname='$database';" | grep --quiet "$database"; then
         return 1
     else
diff --git a/helpers/helpers.v1.d/redis b/helpers/helpers.v1.d/redis
index 4adcbe0dc..fe83500c6 100644
--- a/helpers/helpers.v1.d/redis
+++ b/helpers/helpers.v1.d/redis
@@ -13,10 +13,8 @@ ynh_redis_get_free_db() {
 
     db=0
     # default Debian setting is 15 databases
-    for i in $(seq 0 "$max")
-    do
-        if ! echo "$result" | grep -q "db$i"
-        then
+    for i in $(seq 0 "$max"); do
+        if ! echo "$result" | grep -q "db$i"; then
             db=$i
             break 1
         fi
diff --git a/helpers/helpers.v1.d/ruby b/helpers/helpers.v1.d/ruby
index 103534b19..fb2a09efb 100644
--- a/helpers/helpers.v1.d/ruby
+++ b/helpers/helpers.v1.d/ruby
@@ -50,7 +50,7 @@ fi
 # usage: ynh_use_ruby
 #
 # Requires YunoHost version 3.2.2 or higher.
-ynh_use_ruby () {
+ynh_use_ruby() {
     ruby_version=$(ynh_app_setting_get --app=$app --key=ruby_version)
 
     # Get the absolute path of this version of Ruby
@@ -75,7 +75,7 @@ ynh_use_ruby () {
 
     # Sets the local application-specific Ruby version
     pushd ${install_dir:-$final_path}
-        $rbenv_install_dir/bin/rbenv local $ruby_version
+    $rbenv_install_dir/bin/rbenv local $ruby_version
     popd
 }
 
@@ -95,10 +95,10 @@ ynh_use_ruby () {
 # | arg: -v, --ruby_version= - Version of ruby to install.
 #
 # Requires YunoHost version 3.2.2 or higher.
-ynh_install_ruby () {
+ynh_install_ruby() {
     # Declare an array to define the options of this helper.
     local legacy_args=v
-    local -A args_array=( [v]=ruby_version= )
+    local -A args_array=([v]=ruby_version=)
     local ruby_version
     # Manage arguments with getopts
     ynh_handle_getopts_args "$@"
@@ -117,31 +117,31 @@ ynh_install_ruby () {
     rbenv="$(command -v rbenv $rbenv_install_dir/bin/rbenv | grep "$rbenv_install_dir/bin/rbenv" | head -1)"
     if [ -n "$rbenv" ]; then
         pushd "${rbenv%/*/*}"
-            if git remote -v 2>/dev/null | grep "https://github.com/rbenv/rbenv.git"; then
-                ynh_print_info --message="Updating rbenv..."
-                git pull -q --tags origin master
-                ynh_ruby_try_bash_extension
-            else
-                ynh_print_info --message="Reinstalling rbenv..."
-                cd ..
-                ynh_secure_remove --file=$rbenv_install_dir
-                mkdir -p $rbenv_install_dir
-                cd $rbenv_install_dir
-                git init -q
-                git remote add -f -t master origin https://github.com/rbenv/rbenv.git > /dev/null 2>&1
-                git checkout -q -b master origin/master
-                ynh_ruby_try_bash_extension
-                rbenv=$rbenv_install_dir/bin/rbenv
-            fi
-        popd
-    else
-        ynh_print_info --message="Installing rbenv..."
-        pushd $rbenv_install_dir
+        if git remote -v 2> /dev/null | grep "https://github.com/rbenv/rbenv.git"; then
+            ynh_print_info --message="Updating rbenv..."
+            git pull -q --tags origin master
+            ynh_ruby_try_bash_extension
+        else
+            ynh_print_info --message="Reinstalling rbenv..."
+            cd ..
+            ynh_secure_remove --file=$rbenv_install_dir
+            mkdir -p $rbenv_install_dir
+            cd $rbenv_install_dir
             git init -q
             git remote add -f -t master origin https://github.com/rbenv/rbenv.git > /dev/null 2>&1
             git checkout -q -b master origin/master
             ynh_ruby_try_bash_extension
             rbenv=$rbenv_install_dir/bin/rbenv
+        fi
+        popd
+    else
+        ynh_print_info --message="Installing rbenv..."
+        pushd $rbenv_install_dir
+        git init -q
+        git remote add -f -t master origin https://github.com/rbenv/rbenv.git > /dev/null 2>&1
+        git checkout -q -b master origin/master
+        ynh_ruby_try_bash_extension
+        rbenv=$rbenv_install_dir/bin/rbenv
         popd
     fi
 
@@ -150,10 +150,10 @@ ynh_install_ruby () {
     ruby_build="$(command -v "$rbenv_install_dir"/plugins/*/bin/rbenv-install rbenv-install | head -1)"
     if [ -n "$ruby_build" ]; then
         pushd "${ruby_build%/*/*}"
-            if git remote -v 2>/dev/null | grep "https://github.com/rbenv/ruby-build.git"; then
-                ynh_print_info --message="Updating ruby-build..."
-                git pull -q origin master
-            fi
+        if git remote -v 2> /dev/null | grep "https://github.com/rbenv/ruby-build.git"; then
+            ynh_print_info --message="Updating ruby-build..."
+            git pull -q origin master
+        fi
         popd
     else
         ynh_print_info --message="Installing ruby-build..."
@@ -163,10 +163,10 @@ ynh_install_ruby () {
     rbenv_alias="$(command -v "$rbenv_install_dir"/plugins/*/bin/rbenv-alias rbenv-alias | head -1)"
     if [ -n "$rbenv_alias" ]; then
         pushd "${rbenv_alias%/*/*}"
-            if git remote -v 2>/dev/null | grep "https://github.com/tpope/rbenv-aliases.git"; then
-                ynh_print_info --message="Updating rbenv-aliases..."
-                git pull -q origin master
-            fi
+        if git remote -v 2> /dev/null | grep "https://github.com/tpope/rbenv-aliases.git"; then
+            ynh_print_info --message="Updating rbenv-aliases..."
+            git pull -q origin master
+        fi
         popd
     else
         ynh_print_info --message="Installing rbenv-aliases..."
@@ -176,10 +176,10 @@ ynh_install_ruby () {
     rbenv_latest="$(command -v "$rbenv_install_dir"/plugins/*/bin/rbenv-latest rbenv-latest | head -1)"
     if [ -n "$rbenv_latest" ]; then
         pushd "${rbenv_latest%/*/*}"
-            if git remote -v 2>/dev/null | grep "https://github.com/momo-lab/xxenv-latest.git"; then
-                ynh_print_info --message="Updating xxenv-latest..."
-                git pull -q origin master
-            fi
+        if git remote -v 2> /dev/null | grep "https://github.com/momo-lab/xxenv-latest.git"; then
+            ynh_print_info --message="Updating xxenv-latest..."
+            git pull -q origin master
+        fi
         popd
     else
         ynh_print_info --message="Installing xxenv-latest..."
@@ -210,8 +210,7 @@ ynh_install_ruby () {
     ynh_app_setting_set --app=$app --key=ruby_version --value=$final_ruby_version
 
     # Remove app virtualenv
-    if rbenv alias --list | grep --quiet "$app "
-    then
+    if rbenv alias --list | grep --quiet "$app "; then
         rbenv alias $app --remove
     fi
 
@@ -222,7 +221,7 @@ ynh_install_ruby () {
     ynh_cleanup_ruby
 
     # Set environment for Ruby users
-    echo  "#rbenv
+    echo "#rbenv
 export RBENV_ROOT=$rbenv_install_dir
 export PATH=\"$rbenv_install_dir/bin:$PATH\"
 eval \"\$(rbenv init -)\"
@@ -237,7 +236,7 @@ eval \"\$(rbenv init -)\"
 # This helper will also cleanup Ruby versions
 #
 # usage: ynh_remove_ruby
-ynh_remove_ruby () {
+ynh_remove_ruby() {
     local ruby_version=$(ynh_app_setting_get --app=$app --key=ruby_version)
 
     # Load rbenv path in PATH
@@ -262,34 +261,29 @@ ynh_remove_ruby () {
 # If no app uses Ruby, rbenv will be also removed.
 #
 # usage: ynh_cleanup_ruby
-ynh_cleanup_ruby () {
+ynh_cleanup_ruby() {
 
     # List required Ruby versions
     local installed_apps=$(yunohost app list | grep -oP 'id: \K.*$')
     local required_ruby_versions=""
-    for installed_app in $installed_apps
-    do
+    for installed_app in $installed_apps; do
         local installed_app_ruby_version=$(ynh_app_setting_get --app=$installed_app --key="ruby_version")
-        if [[ -n "$installed_app_ruby_version" ]]
-        then
+        if [[ -n "$installed_app_ruby_version" ]]; then
             required_ruby_versions="${installed_app_ruby_version}\n${required_ruby_versions}"
         fi
     done
 
     # Remove no more needed Ruby versions
     local installed_ruby_versions=$(rbenv versions --bare --skip-aliases | grep -Ev '/')
-    for installed_ruby_version in $installed_ruby_versions
-    do
-        if ! echo ${required_ruby_versions} | grep -q "${installed_ruby_version}"
-        then
+    for installed_ruby_version in $installed_ruby_versions; do
+        if ! echo ${required_ruby_versions} | grep -q "${installed_ruby_version}"; then
             ynh_print_info --message="Removing Ruby-$installed_ruby_version"
             $rbenv_install_dir/bin/rbenv uninstall --force $installed_ruby_version
         fi
     done
 
     # If none Ruby version is required
-    if [[ -z "$required_ruby_versions" ]]
-    then
+    if [[ -z "$required_ruby_versions" ]]; then
         # Remove rbenv environment configuration
         ynh_print_info --message="Removing rbenv"
         ynh_secure_remove --file="$rbenv_install_dir"
@@ -298,9 +292,9 @@ ynh_cleanup_ruby () {
 }
 
 ynh_ruby_try_bash_extension() {
-  if [ -x src/configure ]; then
-    src/configure && make -C src || {
-      ynh_print_info --message="Optional bash extension failed to build, but things will still work normally."
-    }
-  fi
+    if [ -x src/configure ]; then
+        src/configure && make -C src || {
+            ynh_print_info --message="Optional bash extension failed to build, but things will still work normally."
+        }
+    fi
 }
diff --git a/helpers/helpers.v1.d/setting b/helpers/helpers.v1.d/setting
index c1946f6f8..5f4104a8d 100644
--- a/helpers/helpers.v1.d/setting
+++ b/helpers/helpers.v1.d/setting
@@ -120,7 +120,7 @@ ynh_app_setting_delete() {
 #
 ynh_app_setting() {
     set +o xtrace # set +x
-    ACTION="$1" APP="$2" KEY="$3" VALUE="${4:-}" python3 - <<EOF
+    ACTION="$1" APP="$2" KEY="$3" VALUE="${4:-}" python3 - << EOF
 import os, yaml, sys
 app, action = os.environ['APP'], os.environ['ACTION'].lower()
 key, value = os.environ['KEY'], os.environ.get('VALUE', None)
diff --git a/helpers/helpers.v1.d/sources b/helpers/helpers.v1.d/sources
index 9bb0b1c99..6a4a3305c 100644
--- a/helpers/helpers.v1.d/sources
+++ b/helpers/helpers.v1.d/sources
@@ -77,12 +77,10 @@ ynh_setup_source() {
     keep="${keep:-}"
     full_replace="${full_replace:-0}"
 
-    if test -e $YNH_APP_BASEDIR/manifest.toml && cat $YNH_APP_BASEDIR/manifest.toml | toml_to_json | jq -e '.resources.sources' >/dev/null
-    then
+    if test -e $YNH_APP_BASEDIR/manifest.toml && cat $YNH_APP_BASEDIR/manifest.toml | toml_to_json | jq -e '.resources.sources' > /dev/null; then
         source_id="${source_id:-main}"
         local sources_json=$(cat $YNH_APP_BASEDIR/manifest.toml | toml_to_json | jq ".resources.sources[\"$source_id\"]")
-        if jq -re ".url" <<< "$sources_json"
-        then
+        if jq -re ".url" <<< "$sources_json"; then
             local arch_prefix=""
         else
             local arch_prefix=".$YNH_ARCH"
@@ -100,22 +98,16 @@ ynh_setup_source() {
         [[ -n "$src_url" ]] || ynh_die "No URL defined for source $source_id$arch_prefix ?"
         [[ -n "$src_sum" ]] || ynh_die "No sha256 sum defined for source $source_id$arch_prefix ?"
 
-        if [[ -z "$src_format" ]]
-        then
-            if [[ "$src_url" =~ ^.*\.zip$ ]] || [[ "$src_url" =~ ^.*/zipball/.*$ ]]
-            then
+        if [[ -z "$src_format" ]]; then
+            if [[ "$src_url" =~ ^.*\.zip$ ]] || [[ "$src_url" =~ ^.*/zipball/.*$ ]]; then
                 src_format="zip"
-            elif [[ "$src_url" =~ ^.*\.tar\.gz$ ]] || [[ "$src_url" =~ ^.*\.tgz$ ]] || [[ "$src_url" =~ ^.*/tar\.gz/.*$ ]] || [[ "$src_url" =~ ^.*/tarball/.*$ ]]
-            then
+            elif [[ "$src_url" =~ ^.*\.tar\.gz$ ]] || [[ "$src_url" =~ ^.*\.tgz$ ]] || [[ "$src_url" =~ ^.*/tar\.gz/.*$ ]] || [[ "$src_url" =~ ^.*/tarball/.*$ ]]; then
                 src_format="tar.gz"
-            elif [[ "$src_url" =~ ^.*\.tar\.xz$ ]]
-            then
+            elif [[ "$src_url" =~ ^.*\.tar\.xz$ ]]; then
                 src_format="tar.xz"
-            elif [[ "$src_url" =~ ^.*\.tar\.bz2$ ]]
-            then
+            elif [[ "$src_url" =~ ^.*\.tar\.bz2$ ]]; then
                 src_format="tar.bz2"
-            elif [[ -z "$src_extract" ]]
-            then
+            elif [[ -z "$src_extract" ]]; then
                 src_extract="false"
             fi
         fi
@@ -142,12 +134,10 @@ ynh_setup_source() {
     src_format=$(echo "$src_format" | tr '[:upper:]' '[:lower:]')
     src_extract=${src_extract:-true}
 
-    if [[ "$src_extract" != "true" ]] && [[ "$src_extract" != "false" ]]
-    then
+    if [[ "$src_extract" != "true" ]] && [[ "$src_extract" != "false" ]]; then
         ynh_die "For source $source_id, expected either 'true' or 'false' for the extract parameter"
     fi
 
-
     # (Unused?) mecanism where one can have the file in a special local cache to not have to download it...
     local local_src="/opt/yunohost-apps-src/${YNH_APP_ID}/${source_id}"
 
@@ -165,14 +155,12 @@ ynh_setup_source() {
         [ -n "$src_url" ] || ynh_die "Couldn't parse SOURCE_URL from $src_file_path ?"
 
         # If the file was prefetched but somehow doesn't match the sum, rm and redownload it
-        if [ -e "$src_filename" ] && ! echo "${src_sum} ${src_filename}" | ${src_sumprg} --check --status
-        then
+        if [ -e "$src_filename" ] && ! echo "${src_sum} ${src_filename}" | ${src_sumprg} --check --status; then
             rm -f "$src_filename"
         fi
 
         # Only redownload the file if it wasnt prefetched
-        if [ ! -e "$src_filename" ]
-        then
+        if [ ! -e "$src_filename" ]; then
             # NB. we have to declare the var as local first,
             # otherwise 'local foo=$(false) || echo 'pwet'" does'nt work
             # because local always return 0 ...
@@ -183,8 +171,7 @@ ynh_setup_source() {
         fi
 
         # Check the control sum
-        if ! echo "${src_sum} ${src_filename}" | ${src_sumprg} --check --status
-        then
+        if ! echo "${src_sum} ${src_filename}" | ${src_sumprg} --check --status; then
             local actual_sum="$(${src_sumprg} ${src_filename} | cut --delimiter=' ' --fields=1)"
             local actual_size="$(du -hs ${src_filename} | cut --fields=1)"
             rm -f ${src_filename}
@@ -222,8 +209,7 @@ ynh_setup_source() {
     fi
 
     if [[ "$src_extract" == "false" ]]; then
-        if [[ -z "$src_rename" ]]
-        then
+        if [[ -z "$src_rename" ]]; then
             mv $src_filename $dest_dir
         else
             mv $src_filename $dest_dir/$src_rename
@@ -263,11 +249,11 @@ ynh_setup_source() {
     # Apply patches
     if [ -d "$YNH_APP_BASEDIR/sources/patches/" ]; then
         local patches_folder=$(realpath $YNH_APP_BASEDIR/sources/patches/)
-        if (($(find $patches_folder -type f -name "${source_id}-*.patch" 2>/dev/null | wc --lines) > "0")); then
+        if (($(find $patches_folder -type f -name "${source_id}-*.patch" 2> /dev/null | wc --lines) > "0")); then
             pushd "$dest_dir"
             for p in $patches_folder/${source_id}-*.patch; do
                 echo $p
-                patch --strip=1 <$p || ynh_print_warn --message="Packagers /!\\ patch $p failed to apply"
+                patch --strip=1 < $p || ynh_print_warn --message="Packagers /!\\ patch $p failed to apply"
             done
             popd
         fi
diff --git a/helpers/helpers.v1.d/string b/helpers/helpers.v1.d/string
index b674d9a4a..b4f6d06bf 100644
--- a/helpers/helpers.v1.d/string
+++ b/helpers/helpers.v1.d/string
@@ -21,7 +21,7 @@ ynh_string_random() {
     length=${length:-24}
     filter=${filter:-'A-Za-z0-9'}
 
-    dd if=/dev/urandom bs=1 count=1000 2>/dev/null \
+    dd if=/dev/urandom bs=1 count=1000 2> /dev/null \
         | tr --complement --delete "$filter" \
         | sed --quiet 's/\(.\{'"$length"'\}\).*/\1/p'
 }
diff --git a/helpers/helpers.v1.d/systemd b/helpers/helpers.v1.d/systemd
index 765c575ef..d4917045c 100644
--- a/helpers/helpers.v1.d/systemd
+++ b/helpers/helpers.v1.d/systemd
@@ -94,12 +94,12 @@ ynh_systemd_action() {
         # Following the starting of the app in its log
         if [ "$log_path" == "systemd" ]; then
             # Read the systemd journal
-            journalctl --unit=$service_name --follow --since=-0 --quiet >"$templog" &
+            journalctl --unit=$service_name --follow --since=-0 --quiet > "$templog" &
             # Get the PID of the journalctl command
             local pid_tail=$!
         else
             # Read the specified log file
-            tail --follow=name --retry --lines=0 "$log_path" >"$templog" 2>&1 &
+            tail --follow=name --retry --lines=0 "$log_path" > "$templog" 2>&1 &
             # Get the PID of the tail command
             local pid_tail=$!
         fi
@@ -149,8 +149,7 @@ ynh_systemd_action() {
             # Also check the timeout using actual timestamp, because sometimes for some reason,
             # journalctl may take a huge time to run, and we end up waiting literally an entire hour
             # instead of 5 min ...
-            if [[ "$(( $(date +%s) - $starttime))" -gt "$timeout" ]]
-            then
+            if [[ "$(($(date +%s) - $starttime))" -gt "$timeout" ]]; then
                 i=$timeout
                 break
             fi
diff --git a/helpers/helpers.v1.d/systemuser b/helpers/helpers.v1.d/systemuser
index 4fac34bb4..65d00a477 100644
--- a/helpers/helpers.v1.d/systemuser
+++ b/helpers/helpers.v1.d/systemuser
@@ -17,7 +17,7 @@ ynh_system_user_exists() {
     # Manage arguments with getopts
     ynh_handle_getopts_args "$@"
 
-    getent passwd "$username" &>/dev/null
+    getent passwd "$username" &> /dev/null
 }
 
 # Check if a group exists on the system
@@ -37,7 +37,7 @@ ynh_system_group_exists() {
     # Manage arguments with getopts
     ynh_handle_getopts_args "$@"
 
-    getent group "$group" &>/dev/null
+    getent group "$group" &> /dev/null
 }
 
 # Create a system user
diff --git a/helpers/helpers.v1.d/templating b/helpers/helpers.v1.d/templating
index 254f11463..474b403c1 100644
--- a/helpers/helpers.v1.d/templating
+++ b/helpers/helpers.v1.d/templating
@@ -39,11 +39,11 @@
 # This option is meant for advanced use-cases where the "simple" templating
 # mode ain't enough because you need conditional blocks or loops.
 #
-# For a full documentation of jinja's syntax you can refer to: 
+# For a full documentation of jinja's syntax you can refer to:
 # https://jinja.palletsprojects.com/en/3.1.x/templates/
 #
 # Note that in YunoHost context, all variables are from shell variables and therefore are strings
-# 
+#
 # ##### Keeping track of manual changes by the admin
 #
 # The helper will verify the checksum and backup the destination file
@@ -83,10 +83,9 @@ ynh_add_config() {
     chmod 640 $destination
     _ynh_apply_default_permissions $destination
 
-    if [[ "$jinja" == 1 ]]
-    then
+    if [[ "$jinja" == 1 ]]; then
         # This is ran in a subshell such that the "export" does not "contaminate" the main process
-        (
+        (   
             export $(compgen -v)
             j2 "$template_path" -f env -o $destination
         )
@@ -403,5 +402,5 @@ ynh_render_template() {
     # Taken from https://stackoverflow.com/a/35009576
     python3 -c 'import os, sys, jinja2; sys.stdout.write(
                     jinja2.Template(sys.stdin.read()
-                    ).render(os.environ));' <$template_path >$output_path
+                    ).render(os.environ));' < $template_path > $output_path
 }
diff --git a/helpers/helpers.v1.d/utils b/helpers/helpers.v1.d/utils
index 33cffc975..780b62c61 100644
--- a/helpers/helpers.v1.d/utils
+++ b/helpers/helpers.v1.d/utils
@@ -22,8 +22,7 @@ YNH_APP_BASEDIR=${YNH_APP_BASEDIR:-$(realpath ..)}
 ynh_exit_properly() {
     local exit_code=$?
 
-    if [[ "${YNH_APP_ACTION:-}" =~ ^install$|^upgrade$|^restore$ ]]
-    then
+    if [[ "${YNH_APP_ACTION:-}" =~ ^install$|^upgrade$|^restore$ ]]; then
         rm -rf "/var/cache/yunohost/download/"
     fi
 
@@ -39,7 +38,7 @@ ynh_exit_properly() {
     # Small tempo to avoid the next message being mixed up with other DEBUG messages
     sleep 0.5
 
-    if type -t ynh_clean_setup >/dev/null; then # Check if the function exist in the app script.
+    if type -t ynh_clean_setup > /dev/null; then # Check if the function exist in the app script.
         ynh_clean_setup                         # Call the function to do specific cleaning for the app.
     fi
 
@@ -67,8 +66,7 @@ ynh_abort_if_errors() {
 }
 
 # When running an app script with packaging format >= 2, auto-enable ynh_abort_if_errors except for remove script
-if [[ "${YNH_CONTEXT:-}" != "regenconf" ]] && dpkg --compare-versions ${YNH_APP_PACKAGING_FORMAT:-0} ge 2 && [[ ${YNH_APP_ACTION} != "remove" ]]
-then
+if [[ "${YNH_CONTEXT:-}" != "regenconf" ]] && dpkg --compare-versions ${YNH_APP_PACKAGING_FORMAT:-0} ge 2 && [[ ${YNH_APP_ACTION} != "remove" ]]; then
     ynh_abort_if_errors
 fi
 
@@ -149,8 +147,7 @@ _acceptable_path_to_delete() {
     local forbidden_paths=$(ls -d / /* /{var,home,usr}/* /etc/{default,sudoers.d,yunohost,cron*} /etc/yunohost/{apps,domains,hooks.d} /opt/yunohost 2> /dev/null)
 
     # Legacy : A couple apps still have data in /home/$app ...
-    if [[ -n "${app:-}" ]]
-    then
+    if [[ -n "${app:-}" ]]; then
         forbidden_paths=$(echo "$forbidden_paths" | grep -v "/home/$app")
     fi
 
@@ -215,19 +212,16 @@ ynh_read_manifest() {
 
     if [ ! -e "${manifest:-}" ]; then
         # If the manifest isn't found, try the common place for backup and restore script.
-        if [ -e "$YNH_APP_BASEDIR/manifest.json" ]
-        then
+        if [ -e "$YNH_APP_BASEDIR/manifest.json" ]; then
             manifest="$YNH_APP_BASEDIR/manifest.json"
-        elif [ -e "$YNH_APP_BASEDIR/manifest.toml" ]
-        then
+        elif [ -e "$YNH_APP_BASEDIR/manifest.toml" ]; then
             manifest="$YNH_APP_BASEDIR/manifest.toml"
         else
             ynh_die --message "No manifest found !?"
         fi
     fi
 
-    if echo "$manifest" | grep -q '\.json$'
-    then
+    if echo "$manifest" | grep -q '\.json$'; then
         jq ".$manifest_key" "$manifest" --raw-output
     else
         cat "$manifest" | python3 -c 'import json, toml, sys; print(json.dumps(toml.load(sys.stdin)))' | jq ".$manifest_key" --raw-output
@@ -387,8 +381,7 @@ _ynh_apply_default_permissions() {
     # Crons should be owned by root
     # Also we don't want systemd conf, nginx conf or others stuff to be owned by the app,
     # otherwise they could self-edit their own systemd conf and escalate privilege
-    if grep -qE '^(/etc/cron|/etc/php|/etc/nginx/conf.d|/etc/fail2ban|/etc/systemd/system)' <<< "$target"
-    then
+    if grep -qE '^(/etc/cron|/etc/php|/etc/nginx/conf.d|/etc/fail2ban|/etc/systemd/system)' <<< "$target"; then
         chmod 400 $target
         chown root:root $target
     fi
@@ -419,7 +412,7 @@ ynh_user_exists() {
     # Manage arguments with getopts
     ynh_handle_getopts_args "$@"
 
-    yunohost user list --output-as json --quiet | jq -e ".users.\"${username}\"" >/dev/null
+    yunohost user list --output-as json --quiet | jq -e ".users.\"${username}\"" > /dev/null
 }
 
 # Retrieve a YunoHost user information
diff --git a/helpers/helpers.v2.1.d/apt b/helpers/helpers.v2.1.d/apt
index f9f0cdee2..7f44cb67d 100644
--- a/helpers/helpers.v2.1.d/apt
+++ b/helpers/helpers.v2.1.d/apt
@@ -39,8 +39,7 @@ ynh_apt_install_dependencies() {
     # The (?<=php) syntax corresponds to lookbehind ;)
     local specific_php_version=$(grep -oP '(?<=php)[0-9.]+(?=-|\>|)' <<< "$dependencies" | sort -u)
 
-    if [[ -n "$specific_php_version" ]]
-    then
+    if [[ -n "$specific_php_version" ]]; then
         # Cover a small edge case where a packager could have specified "php7.4-pwet php5-gni" which is confusing
         [[ $(echo $specific_php_version | wc -l) -eq 1 ]] \
             || ynh_die "Inconsistent php versions in dependencies ... found : $specific_php_version"
@@ -51,8 +50,7 @@ ynh_apt_install_dependencies() {
 
         # If the PHP version changed, remove the old fpm conf
         if [ -n "$old_php_version" ] && [ "$old_php_version" != "$specific_php_version" ]; then
-            if [[ -f "/etc/php/$php_version/fpm/pool.d/$app.conf" ]]
-            then
+            if [[ -f "/etc/php/$php_version/fpm/pool.d/$app.conf" ]]; then
                 ynh_backup_if_checksum_is_different "/etc/php/$php_version/fpm/pool.d/$app.conf"
                 ynh_config_remove_phpfpm
             fi
@@ -61,8 +59,7 @@ ynh_apt_install_dependencies() {
         ynh_app_setting_set --key=php_version --value=$specific_php_version
 
         # Set the default php version back as the default version for php-cli.
-        if test -e /usr/bin/php$YNH_DEFAULT_PHP_VERSION
-        then
+        if test -e /usr/bin/php$YNH_DEFAULT_PHP_VERSION; then
             update-alternatives --set php /usr/bin/php$YNH_DEFAULT_PHP_VERSION
         fi
     elif grep --quiet 'php' <<< "$dependencies"; then
@@ -77,13 +74,11 @@ ynh_apt_install_dependencies() {
     # upgrade script where ynh_apt_install_dependencies is called with this
     # expected effect) Otherwise, any subsequent call will add dependencies
     # to those already present in the equivs control file.
-    if [[ $YNH_APT_INSTALL_DEPENDENCIES_REPLACE == "true" ]]
-    then
+    if [[ $YNH_APT_INSTALL_DEPENDENCIES_REPLACE == "true" ]]; then
         YNH_APT_INSTALL_DEPENDENCIES_REPLACE="false"
     else
         local current_dependencies=""
-        if _ynh_apt_package_is_installed "${app_ynh_deps}"
-        then
+        if _ynh_apt_package_is_installed "${app_ynh_deps}"; then
             current_dependencies="$(dpkg-query --show --showformat='${Depends}' ${app_ynh_deps}) "
             current_dependencies=${current_dependencies// | /|}
         fi
@@ -100,7 +95,7 @@ ynh_apt_install_dependencies() {
     # For some reason, dpkg-deb insists for folder perm to be 755 and sometimes it's 777 o_O?
     chmod -R 755 ${TMPDIR}/${app_ynh_deps}
 
-    cat >${TMPDIR}/${app_ynh_deps}/DEBIAN/control <<EOF
+    cat > ${TMPDIR}/${app_ynh_deps}/DEBIAN/control << EOF
 Section: misc
 Priority: optional
 Package: ${app_ynh_deps}
@@ -145,8 +140,7 @@ EOF
     # Specific tweak related to Postgresql
     # -> trigger postgresql regenconf if we may have just installed postgresql
     local psql_installed2="$(_ynh_apt_package_is_installed "postgresql-$PSQL_VERSION" && echo yes || echo no)"
-    if [[ "$psql_installed" != "$psql_installed2" ]]
-    then
+    if [[ "$psql_installed" != "$psql_installed2" ]]; then
         yunohost tools regen-conf postgresql
     fi
 
@@ -168,16 +162,14 @@ ynh_apt_remove_dependencies() {
 
     # Edge case where the app dep may be on hold,
     # cf https://forum.yunohost.org/t/migration-error-cause-of-ffsync/20675/4
-    if apt-mark showhold | grep -q -w ${app_ynh_deps}
-    then
+    if apt-mark showhold | grep -q -w ${app_ynh_deps}; then
         apt-mark unhold ${app_ynh_deps}
     fi
 
     # Remove the fake package and its dependencies if they not still used.
     # (except if dpkg doesn't know anything about the package,
     # which should be symptomatic of a failed install, and we don't want bash to report an error)
-    if dpkg-query --show ${app_ynh_deps} &>/dev/null
-    then
+    if dpkg-query --show ${app_ynh_deps} &> /dev/null; then
         _ynh_apt autoremove --purge ${app_ynh_deps}
     fi
 }
@@ -206,11 +198,13 @@ ynh_apt_install_dependencies_from_extra_repository() {
     if [[ "${repo_parts[0]}" == "deb" ]]; then
         index=1
     fi
-    uri="${repo_parts[$index]}" ; index=$((index+1))
-    suite="${repo_parts[$index]}" ; index=$((index+1))
+    uri="${repo_parts[$index]}"
+    index=$((index + 1))
+    suite="${repo_parts[$index]}"
+    index=$((index + 1))
 
     # Get the components
-    if (( "${#repo_parts[@]}" > 0 )); then
+    if (("${#repo_parts[@]}" > 0)); then
         component="${repo_parts[*]:$index}"
     fi
 
@@ -280,7 +274,7 @@ _ynh_wait_dpkg_free() {
     # With seq 1 17, timeout will be almost 30 minutes
     for try in $(seq 1 17); do
         # Check if /var/lib/dpkg/lock is used by another process
-        if lsof /var/lib/dpkg/lock >/dev/null; then
+        if lsof /var/lib/dpkg/lock > /dev/null; then
             echo "apt is already in use..."
             # Sleep an exponential time at each round
             sleep $((try * try))
@@ -298,7 +292,7 @@ _ynh_wait_dpkg_free() {
                     set -o xtrace # set -x
                     return 1
                 fi
-            done 9<<<"$(ls -1 $dpkg_dir)"
+            done 9<<< "$(ls -1 $dpkg_dir)"
             set -o xtrace # set -x
             return 0
         fi
@@ -310,14 +304,14 @@ _ynh_wait_dpkg_free() {
 # Check either a package is installed or not
 _ynh_apt_package_is_installed() {
     local package=$1
-    dpkg-query --show --showformat='${db:Status-Status}' "$package" 2>/dev/null \
-        | grep --quiet "^installed$" &>/dev/null
+    dpkg-query --show --showformat='${db:Status-Status}' "$package" 2> /dev/null \
+        | grep --quiet "^installed$" &> /dev/null
 }
 
 # Return the installed version of an apt package, if installed
 _ynh_apt_package_version() {
     if _ynh_apt_package_is_installed "$package"; then
-        dpkg-query --show --showformat='${Version}' "$package" 2>/dev/null
+        dpkg-query --show --showformat='${Version}' "$package" 2> /dev/null
     else
         echo ''
     fi
diff --git a/helpers/helpers.v2.1.d/backup b/helpers/helpers.v2.1.d/backup
index a40c4f1f2..2fb2cf3f7 100644
--- a/helpers/helpers.v2.1.d/backup
+++ b/helpers/helpers.v2.1.d/backup
@@ -27,13 +27,11 @@ ynh_backup() {
     local is_data=false
 
     # If the path starts with /var/log/$app or $data_dir
-    if ([[ -n "${app:-}" ]] && [[ "$target" == "/var/log/$app*" ]]) || ([[ -n "${data_dir:-}" ]] && [[ "$target" == "$data_dir*" ]])
-    then
+    if ([[ -n "${app:-}" ]] && [[ "$target" == "/var/log/$app*" ]]) || ([[ -n "${data_dir:-}" ]] && [[ "$target" == "$data_dir*" ]]); then
         is_data=true
     fi
 
-    if [[ -n "${app:-}" ]]
-    then
+    if [[ -n "${app:-}" ]]; then
         local do_not_backup_data=$(ynh_app_setting_get --key=do_not_backup_data)
     fi
 
@@ -83,7 +81,7 @@ ynh_backup() {
     # ==============================================================================
     local src=$(echo "${src_path}" | sed --regexp-extended 's/"/\"\"/g')
     local dest=$(echo "${dest_path}" | sed --regexp-extended 's/"/\"\"/g')
-    echo "\"${src}\",\"${dest}\"" >>"${YNH_BACKUP_CSV}"
+    echo "\"${src}\",\"${dest}\"" >> "${YNH_BACKUP_CSV}"
 
     # ==============================================================================
 
@@ -135,15 +133,13 @@ ynh_restore() {
 
     # If the path starts with /var/log/$app or $data_dir
     local is_data=false
-    if ([[ -n "${app:-}" ]] && [[ "$target" == "/var/log/$app*" ]]) || ([[ -n "${data_dir:-}" ]] && [[ "$target" == "$data_dir*" ]])
-    then
+    if ([[ -n "${app:-}" ]] && [[ "$target" == "/var/log/$app*" ]]) || ([[ -n "${data_dir:-}" ]] && [[ "$target" == "$data_dir*" ]]); then
         is_data=true
     fi
 
     # If archive_path doesn't exist, search for a corresponding path in CSV
     if [ ! -d "$archive_path" ] && [ ! -f "$archive_path" ] && [ ! -L "$archive_path" ]; then
-        if [[ "$is_data" == true ]]
-        then
+        if [[ "$is_data" == true ]]; then
             ynh_print_info "Skipping $target which doesn't exists in the archive, probably because restoring from a safety-backup-before-upgrade"
             # Assume it's not a big deal, we may be restoring a safety-backup-before-upgrade which doesnt contain those
             return 0
@@ -256,8 +252,7 @@ ynh_backup_if_checksum_is_different() {
             echo "$backup_file_checksum" # Return the name of the backup file
             if ynh_in_ci_tests; then
                 local file_path_base64=$(echo "$file" | base64 -w0)
-                if test -e /var/cache/yunohost/appconfbackup/original_${file_path_base64}
-                then
+                if test -e /var/cache/yunohost/appconfbackup/original_${file_path_base64}; then
                     ynh_print_warn "Diff with the original file:"
                     diff --report-identical-files --unified --color=always /var/cache/yunohost/appconfbackup/original_${file_path_base64} $file >&2 || true
                 fi
diff --git a/helpers/helpers.v2.1.d/composer b/helpers/helpers.v2.1.d/composer
index b9608f693..51e62cf8c 100644
--- a/helpers/helpers.v2.1.d/composer
+++ b/helpers/helpers.v2.1.d/composer
@@ -38,8 +38,8 @@ ynh_composer_exec() {
     local workdir="${composer_workdir:-$install_dir}"
 
     COMPOSER_HOME="$workdir/.composer" \
-    COMPOSER_MEMORY_LIMIT=-1 \
-    sudo -E -u "${composer_user:-$app}" \
-    php${php_version} "$workdir/composer.phar" $@ \
+        COMPOSER_MEMORY_LIMIT=-1 \
+        sudo -E -u "${composer_user:-$app}" \
+        php${php_version} "$workdir/composer.phar" $@ \
         -d "$workdir" --no-interaction --no-ansi 2>&1
 }
diff --git a/helpers/helpers.v2.1.d/config b/helpers/helpers.v2.1.d/config
index b853d44d8..f15398156 100644
--- a/helpers/helpers.v2.1.d/config
+++ b/helpers/helpers.v2.1.d/config
@@ -6,11 +6,11 @@ _ynh_app_config_get_one() {
     local bind="$3"
     local getter="get__${short_setting}"
     # Get value from getter if exists
-    if type -t $getter 2>/dev/null | grep -q '^function$' 2>/dev/null; then
+    if type -t $getter 2> /dev/null | grep -q '^function$' 2> /dev/null; then
         old[$short_setting]="$($getter)"
         formats[${short_setting}]="yaml"
 
-    elif [[ "$bind" == *"("* ]] && type -t "get__${bind%%(*}" 2>/dev/null | grep -q '^function$' 2>/dev/null; then
+    elif [[ "$bind" == *"("* ]] && type -t "get__${bind%%(*}" 2> /dev/null | grep -q '^function$' 2> /dev/null; then
         old[$short_setting]="$("get__${bind%%(*}" $short_setting $type $bind)"
         formats[${short_setting}]="yaml"
 
@@ -22,7 +22,7 @@ _ynh_app_config_get_one() {
         if [[ "$bind" == "settings" ]]; then
             ynh_die "File '${short_setting}' can't be stored in settings"
         fi
-        old[$short_setting]="$(ls "$bind" 2>/dev/null || echo YNH_NULL)"
+        old[$short_setting]="$(ls "$bind" 2> /dev/null || echo YNH_NULL)"
         file_hash[$short_setting]="true"
 
     # Get multiline text from settings or from a full file
@@ -32,7 +32,7 @@ _ynh_app_config_get_one() {
         elif [[ "$bind" == *":"* ]]; then
             ynh_die "For technical reasons, multiline text '${short_setting}' can't be stored automatically  in a variable file, you have to create custom getter/setter"
         else
-            old[$short_setting]="$(cat "$bind" 2>/dev/null || echo YNH_NULL)"
+            old[$short_setting]="$(cat "$bind" 2> /dev/null || echo YNH_NULL)"
         fi
 
     # Get value from a kind of key/value file
@@ -59,10 +59,10 @@ _ynh_app_config_apply_one() {
     local type="${types[$short_setting]}"
     if [ "${changed[$short_setting]}" == "true" ]; then
         # Apply setter if exists
-        if type -t $setter 2>/dev/null | grep -q '^function$' 2>/dev/null; then
+        if type -t $setter 2> /dev/null | grep -q '^function$' 2> /dev/null; then
             $setter
 
-        elif [[ "$bind" == *"("* ]] && type -t "set__${bind%%(*}" 2>/dev/null | grep -q '^function$' 2>/dev/null; then
+        elif [[ "$bind" == *"("* ]] && type -t "set__${bind%%(*}" 2> /dev/null | grep -q '^function$' 2> /dev/null; then
             "set__${bind%%(*}" $short_setting $type $bind
 
         elif [[ "$bind" == "null" ]]; then
@@ -84,8 +84,7 @@ _ynh_app_config_apply_one() {
                 if [[ "${!short_setting}" != "$bind_file" ]]; then
                     cp "${!short_setting}" "$bind_file"
                 fi
-                if _ynh_file_checksum_exists "$bind_file"
-                then
+                if _ynh_file_checksum_exists "$bind_file"; then
                     ynh_store_file_checksum "$bind_file"
                 fi
                 ynh_print_info "File '$bind_file' overwritten with ${!short_setting}"
@@ -103,9 +102,8 @@ _ynh_app_config_apply_one() {
             fi
             local bind_file="$bind"
             ynh_backup_if_checksum_is_different "$bind_file"
-            echo "${!short_setting}" >"$bind_file"
-            if _ynh_file_checksum_exists "$bind_file"
-            then
+            echo "${!short_setting}" > "$bind_file"
+            if _ynh_file_checksum_exists "$bind_file"; then
                 ynh_store_file_checksum "$bind_file"
             fi
             ynh_print_info "File '$bind_file' overwritten with the content provided in question '${short_setting}'"
@@ -123,8 +121,7 @@ _ynh_app_config_apply_one() {
 
             ynh_backup_if_checksum_is_different "$bind_file"
             ynh_write_var_in_file --file="${bind_file}" --key="${bind_key_}" --value="${!short_setting}" --after="${bind_after}"
-            if _ynh_file_checksum_exists "$bind_file"
-            then
+            if _ynh_file_checksum_exists "$bind_file"; then
                 ynh_store_file_checksum "$bind_file"
             fi
 
@@ -139,7 +136,7 @@ _ynh_app_config_apply_one() {
 _ynh_app_config_get() {
     for line in $YNH_APP_CONFIG_PANEL_OPTIONS_TYPES_AND_BINDS; do
         # Split line into short_setting, type and bind
-        IFS='|' read short_setting type bind <<<"$line"
+        IFS='|' read short_setting type bind <<< "$line"
         binds[${short_setting}]="$bind"
         types[${short_setting}]="$type"
         file_hash[${short_setting}]=""
@@ -215,9 +212,9 @@ _ynh_app_config_validate() {
     for short_setting in "${!old[@]}"; do
         [[ "${changed[$short_setting]}" == "false" ]] && continue
         local result=""
-        if type -t validate__$short_setting | grep -q '^function$' 2>/dev/null; then
+        if type -t validate__$short_setting | grep -q '^function$' 2> /dev/null; then
             result="$(validate__$short_setting)"
-        elif [[ "$bind" == *"("* ]] && type -t "validate__${bind%%(*}" 2>/dev/null | grep -q '^function$' 2>/dev/null; then
+        elif [[ "$bind" == *"("* ]] && type -t "validate__${bind%%(*}" 2> /dev/null | grep -q '^function$' 2> /dev/null; then
             "validate__${bind%%(*}" $short_setting
         fi
         if [ -n "$result" ]; then
@@ -272,7 +269,7 @@ ynh_app_config_apply() {
 ynh_app_action_run() {
     local runner="run__$1"
     # Get value from getter if exists
-    if type -t "$runner" 2>/dev/null | grep -q '^function$' 2>/dev/null; then
+    if type -t "$runner" 2> /dev/null | grep -q '^function$' 2> /dev/null; then
         $runner
         #ynh_return "result:"
         #ynh_return "$(echo "${result}" | sed 's/^/  /g')"
@@ -290,22 +287,23 @@ ynh_app_config_run() {
     declare -Ag formats=()
 
     case $1 in
-    show)
-        ynh_app_config_get
-        ynh_app_config_show
-        ;;
-    apply)
-        max_progression=4
-        ynh_script_progression "Reading config panel description and current configuration..."
-        ynh_app_config_get
+        show)
+            ynh_app_config_get
+            ynh_app_config_show
+            ;;
+        apply)
+            max_progression=4
+            ynh_script_progression "Reading config panel description and current configuration..."
+            ynh_app_config_get
 
-        ynh_app_config_validate
+            ynh_app_config_validate
 
-        ynh_script_progression "Applying the new configuration..."
-        ynh_app_config_apply
-        ynh_script_progression "Configuration of $app completed"
-        ;;
-    *)
-        ynh_app_action_run $1
+            ynh_script_progression "Applying the new configuration..."
+            ynh_app_config_apply
+            ynh_script_progression "Configuration of $app completed"
+            ;;
+        *)
+            ynh_app_action_run $1
+            ;;
     esac
 }
diff --git a/helpers/helpers.v2.1.d/fail2ban b/helpers/helpers.v2.1.d/fail2ban
index 6ca379074..8967bf5c8 100644
--- a/helpers/helpers.v2.1.d/fail2ban
+++ b/helpers/helpers.v2.1.d/fail2ban
@@ -68,7 +68,7 @@ port = http,https
 filter = __APP__
 logpath = __LOGPATH__
 maxretry = 5
-" >"$YNH_APP_BASEDIR/conf/f2b_jail.conf"
+" > "$YNH_APP_BASEDIR/conf/f2b_jail.conf"
 
         echo "
 [INCLUDES]
@@ -76,7 +76,7 @@ before = common.conf
 [Definition]
 failregex = __FAILREGEX__
 ignoreregex =
-" >"$YNH_APP_BASEDIR/conf/f2b_filter.conf"
+" > "$YNH_APP_BASEDIR/conf/f2b_filter.conf"
     fi
 
     ynh_config_add --template="f2b_jail.conf" --destination="/etc/fail2ban/jail.d/$app.conf"
diff --git a/helpers/helpers.v2.1.d/getopts b/helpers/helpers.v2.1.d/getopts
index 92b6d4772..aa452d9fd 100644
--- a/helpers/helpers.v2.1.d/getopts
+++ b/helpers/helpers.v2.1.d/getopts
@@ -20,7 +20,7 @@
 # | arg: $@    - Simply "$@" to tranfert all the positionnal arguments to the function
 #
 # This helper need an array, named "args_array" with all the arguments used by the helper
-#   that want to use ynh_handle_getopts_args
+# that want to use ynh_handle_getopts_args
 # Be carreful, this array has to be an associative array, as the following example:
 # local -A args_array=( [a]=arg1 [b]=arg2= [c]=arg3 )
 # Let's explain this array:
@@ -50,8 +50,7 @@ ynh_handle_getopts_args() {
         eval "$xtrace_enable"
         return
     # Validate that the first char is - because it should be something like --option=value or -o ...
-    elif [[ "${1:0:1}" != "-" ]]
-    then
+    elif [[ "${1:0:1}" != "-" ]]; then
         ynh_die "It looks like you called the helper using positional arguments instead of keyword arguments ?"
     fi
 
diff --git a/helpers/helpers.v2.1.d/go b/helpers/helpers.v2.1.d/go
index bb272d50c..7e9a6391b 100644
--- a/helpers/helpers.v2.1.d/go
+++ b/helpers/helpers.v2.1.d/go
@@ -23,7 +23,7 @@ _ynh_load_go_in_path_and_other_tweaks() {
 
     # Sets the local application-specific go version
     pushd ${install_dir}
-        $GOENV_INSTALL_DIR/bin/goenv local $go_version
+    $GOENV_INSTALL_DIR/bin/goenv local $go_version
     popd
 }
 
@@ -39,7 +39,7 @@ _ynh_load_go_in_path_and_other_tweaks() {
 # - `$go_dir` (the directory containing the specific go version)
 #
 # This helper also creates a /etc/profile.d/goenv.sh that configures PATH environment for goenv
-ynh_go_install () {
+ynh_go_install() {
 
     [[ -n "${go_version:-}" ]] || ynh_die "\$go_version should be defined prior to calling ynh_go_install"
 
@@ -55,33 +55,33 @@ ynh_go_install () {
     # Install or update goenv
     mkdir -p $GOENV_INSTALL_DIR
     pushd "$GOENV_INSTALL_DIR"
-        if ! [ -x "$GOENV_INSTALL_DIR/bin/goenv" ]; then
-            ynh_print_info "Downloading goenv..."
-            git init -q
-            git remote add origin https://github.com/syndbg/goenv.git 
-        else
-            ynh_print_info "Updating goenv..."
-        fi
-        git fetch -q --tags --prune origin
-        local git_latest_tag=$(git describe --tags "$(git rev-list --tags --max-count=1)")
-        git checkout -q "$git_latest_tag"
-        _ynh_go_try_bash_extension
-        goenv=$GOENV_INSTALL_DIR/bin/goenv
+    if ! [ -x "$GOENV_INSTALL_DIR/bin/goenv" ]; then
+        ynh_print_info "Downloading goenv..."
+        git init -q
+        git remote add origin https://github.com/syndbg/goenv.git
+    else
+        ynh_print_info "Updating goenv..."
+    fi
+    git fetch -q --tags --prune origin
+    local git_latest_tag=$(git describe --tags "$(git rev-list --tags --max-count=1)")
+    git checkout -q "$git_latest_tag"
+    _ynh_go_try_bash_extension
+    goenv=$GOENV_INSTALL_DIR/bin/goenv
     popd
 
     # Install or update xxenv-latest
     mkdir -p "$GOENV_INSTALL_DIR/plugins/xxenv-latest"
     pushd "$GOENV_INSTALL_DIR/plugins/xxenv-latest"
-        if ! [ -x "$GOENV_INSTALL_DIR/plugins/xxenv-latest/bin/goenv-latest" ]; then
-            ynh_print_info "Downloading xxenv-latest..."
-            git init -q
-            git remote add origin https://github.com/momo-lab/xxenv-latest.git 
-        else
-            ynh_print_info "Updating xxenv-latest..."
-        fi
-        git fetch -q --tags --prune origin
-        local git_latest_tag=$(git describe --tags "$(git rev-list --tags --max-count=1)")
-        git checkout -q "$git_latest_tag"
+    if ! [ -x "$GOENV_INSTALL_DIR/plugins/xxenv-latest/bin/goenv-latest" ]; then
+        ynh_print_info "Downloading xxenv-latest..."
+        git init -q
+        git remote add origin https://github.com/momo-lab/xxenv-latest.git
+    else
+        ynh_print_info "Updating xxenv-latest..."
+    fi
+    git fetch -q --tags --prune origin
+    local git_latest_tag=$(git describe --tags "$(git rev-list --tags --max-count=1)")
+    git checkout -q "$git_latest_tag"
     popd
 
     # Enable caching
@@ -109,7 +109,7 @@ ynh_go_install () {
     _ynh_go_cleanup
 
     # Set environment for Go users
-    echo  "#goenv
+    echo "#goenv
 export GOENV_ROOT=$GOENV_INSTALL_DIR
 export PATH=\"$GOENV_INSTALL_DIR/bin:$PATH\"
 eval \"\$(goenv init -)\"
@@ -126,7 +126,7 @@ eval \"\$(goenv init -)\"
 # This helper will also cleanup Go versions
 #
 # usage: ynh_go_remove
-ynh_go_remove () {
+ynh_go_remove() {
     local go_version=$(ynh_app_setting_get --key="go_version")
 
     # Load goenv path in PATH
@@ -151,34 +151,29 @@ ynh_go_remove () {
 # If no app uses Go, goenv will be also removed.
 #
 # usage: _ynh_go_cleanup
-_ynh_go_cleanup () {
+_ynh_go_cleanup() {
 
     # List required Go versions
     local installed_apps=$(yunohost app list --output-as json --quiet | jq -r .apps[].id)
     local required_go_versions=""
-    for installed_app in $installed_apps
-    do
+    for installed_app in $installed_apps; do
         local installed_app_go_version=$(ynh_app_setting_get --app=$installed_app --key="go_version")
-        if [[ $installed_app_go_version ]]
-        then
+        if [[ $installed_app_go_version ]]; then
             required_go_versions="${installed_app_go_version}\n${required_go_versions}"
         fi
     done
 
     # Remove no more needed Go versions
     local installed_go_versions=$(goenv versions --bare --skip-aliases | grep -Ev '/')
-    for installed_go_version in $installed_go_versions
-    do
-        if ! `echo ${required_go_versions} | grep "${installed_go_version}" 1>/dev/null 2>&1`
-        then
+    for installed_go_version in $installed_go_versions; do
+        if ! $(echo ${required_go_versions} | grep "${installed_go_version}" 1> /dev/null 2>&1); then
             ynh_print_info "Removing of Go-$installed_go_version"
             $GOENV_INSTALL_DIR/bin/goenv uninstall --force "$installed_go_version"
         fi
     done
 
     # If none Go version is required
-    if [[ ! $required_go_versions ]]
-    then
+    if [[ ! $required_go_versions ]]; then
         # Remove goenv environment configuration
         ynh_print_info "Removing of goenv"
         ynh_safe_rm "$GOENV_INSTALL_DIR"
@@ -187,9 +182,9 @@ _ynh_go_cleanup () {
 }
 
 _ynh_go_try_bash_extension() {
-  if [ -x src/configure ]; then
-    src/configure && make -C src || {
-      ynh_print_info "Optional bash extension failed to build, but things will still work normally."
-    }
-  fi
+    if [ -x src/configure ]; then
+        src/configure && make -C src || {
+            ynh_print_info "Optional bash extension failed to build, but things will still work normally."
+        }
+    fi
 }
diff --git a/helpers/helpers.v2.1.d/logging b/helpers/helpers.v2.1.d/logging
index a2471cd2d..8786daaed 100644
--- a/helpers/helpers.v2.1.d/logging
+++ b/helpers/helpers.v2.1.d/logging
@@ -5,11 +5,9 @@
 # usage: ynh_die "Some message"
 ynh_die() {
     set +o xtrace # set +x
-    if [[ -n "${1:-}" ]]
-    then
-        if [[ -n "${YNH_STDRETURN:-}" ]]
-        then
-            python3 -c 'import yaml, sys; print(yaml.dump({"error": sys.stdin.read()}))' <<< "${1:-}" >>"$YNH_STDRETURN"
+    if [[ -n "${1:-}" ]]; then
+        if [[ -n "${YNH_STDRETURN:-}" ]]; then
+            python3 -c 'import yaml, sys; print(yaml.dump({"error": sys.stdin.read()}))' <<< "${1:-}" >> "$YNH_STDRETURN"
         fi
         echo "${1:-}" 1>&2
     fi
@@ -51,7 +49,7 @@ ynh_exec_and_print_stderr_only_if_error() {
     rc=0
     # Note that "$@" is used and not $@, c.f. https://unix.stackexchange.com/a/129077
     "$@" 2> "$logfile" || rc="$?"
-    if (( rc != 0 )); then
+    if ((rc != 0)); then
         cat "$logfile" >&2
         ynh_safe_rm "$logfile"
         return "$rc"
@@ -63,7 +61,7 @@ ynh_exec_and_print_stderr_only_if_error() {
 #
 # usage: ynh_return somedata
 ynh_return() {
-    echo "$1" >>"$YNH_STDRETURN"
+    echo "$1" >> "$YNH_STDRETURN"
 }
 
 # Initial definitions for ynh_script_progression
@@ -105,10 +103,9 @@ ynh_script_progression() {
     local expected_progression="$((($increment_progression + 1) * $progress_scale / $max_progression - $effective_progression))"
 
     # Hack for the "--last" message
-    if grep -qw 'completed' <<< "$1";
-    then
-         effective_progression=$progress_scale
-         expected_progression=0
+    if grep -qw 'completed' <<< "$1"; then
+        effective_progression=$progress_scale
+        expected_progression=0
     fi
     # left_progression is the progression not yet done
     local left_progression="$(($progress_scale - $effective_progression - $expected_progression))"
diff --git a/helpers/helpers.v2.1.d/logrotate b/helpers/helpers.v2.1.d/logrotate
index e431841c5..4d471b43c 100644
--- a/helpers/helpers.v2.1.d/logrotate
+++ b/helpers/helpers.v2.1.d/logrotate
@@ -22,8 +22,7 @@ ynh_config_add_logrotate() {
     fi
     set +o noglob
 
-    for stuff in $logfile
-    do
+    for stuff in $logfile; do
         # Make sure the permissions of the parent dir are correct (otherwise the config file could be ignored and the corresponding logs never rotated)
         local dir=$(dirname "$stuff")
         mkdir --parents $dir
@@ -32,7 +31,7 @@ ynh_config_add_logrotate() {
     done
 
     local tempconf="$(mktemp)"
-    cat << EOF >$tempconf
+    cat << EOF > $tempconf
 $logfile {
     # Rotate if the logfile exceeds 100Mo
     size 100M
@@ -53,8 +52,7 @@ $logfile {
 }
 EOF
 
-    if [[ "$FIRST_CALL_TO_LOGROTATE" == "true" ]]
-    then
+    if [[ "$FIRST_CALL_TO_LOGROTATE" == "true" ]]; then
         cat $tempconf > /etc/logrotate.d/$app
     else
         cat $tempconf >> /etc/logrotate.d/$app
diff --git a/helpers/helpers.v2.1.d/mongodb b/helpers/helpers.v2.1.d/mongodb
index 3fb851277..95e04ec0e 100644
--- a/helpers/helpers.v2.1.d/mongodb
+++ b/helpers/helpers.v2.1.d/mongodb
@@ -12,16 +12,15 @@
 #
 ynh_mongo_exec() {
     # ============ Argument parsing =============
-    local -A args_array=( [d]=database= [c]=command= )
+    local -A args_array=([d]=database= [c]=command=)
     local database
     local command
     ynh_handle_getopts_args "$@"
     database="${database:-}"
     # ===========================================
 
-    if [ -n "$database" ]
-    then
-        mongosh --quiet <<EOF
+    if [ -n "$database" ]; then
+        mongosh --quiet << EOF
 use $database
 ${command}
 quit()
@@ -44,7 +43,7 @@ EOF
 #
 ynh_mongo_drop_db() {
     # ============ Argument parsing =============
-    local -A args_array=( [d]=database= )
+    local -A args_array=([d]=database=)
     local database
     ynh_handle_getopts_args "$@"
     # ===========================================
@@ -63,7 +62,7 @@ ynh_mongo_drop_db() {
 #
 ynh_mongo_dump_db() {
     # ============ Argument parsing =============
-    local -A args_array=( [d]=database= )
+    local -A args_array=([d]=database=)
     local database
     ynh_handle_getopts_args "$@"
     # ===========================================
@@ -83,7 +82,7 @@ ynh_mongo_dump_db() {
 #
 ynh_mongo_create_user() {
     # ============ Argument parsing =============
-    local -A args_array=( [u]=db_user= [n]=db_name= [p]=db_pwd= )
+    local -A args_array=([u]=db_user= [n]=db_name= [p]=db_pwd=)
     local db_user
     local db_name
     local db_pwd
@@ -111,8 +110,7 @@ ynh_mongo_database_exists() {
     ynh_handle_getopts_args "$@"
     # ===========================================
 
-    if [ $(ynh_mongo_exec --command='db.getMongo().getDBNames().indexOf("'${database}'")') -lt 0 ]
-    then
+    if [ $(ynh_mongo_exec --command='db.getMongo().getDBNames().indexOf("'${database}'")') -lt 0 ]; then
         return 1
     else
         return 0
@@ -129,7 +127,7 @@ ynh_mongo_database_exists() {
 #
 ynh_mongo_restore_db() {
     # ============ Argument parsing =============
-    local -A args_array=( [d]=database= )
+    local -A args_array=([d]=database=)
     local database
     ynh_handle_getopts_args "$@"
     # ===========================================
@@ -148,7 +146,7 @@ ynh_mongo_restore_db() {
 #
 ynh_mongo_drop_user() {
     # ============ Argument parsing =============
-    local -A args_array=( [u]=db_user= [n]=db_name= )
+    local -A args_array=([u]=db_user= [n]=db_name=)
     local db_user
     local db_name
     ynh_handle_getopts_args "$@"
@@ -170,7 +168,7 @@ ynh_mongo_drop_user() {
 #
 ynh_mongo_setup_db() {
     # ============ Argument parsing =============
-    local -A args_array=( [u]=db_user= [n]=db_name= [p]=db_pwd= )
+    local -A args_array=([u]=db_user= [n]=db_name= [p]=db_pwd=)
     local db_user
     local db_name
     db_pwd=""
@@ -197,14 +195,14 @@ ynh_mongo_setup_db() {
 #
 ynh_mongo_remove_db() {
     # ============ Argument parsing =============
-    local -A args_array=( [u]=db_user= [n]=db_name= )
+    local -A args_array=([u]=db_user= [n]=db_name=)
     local db_user
     local db_name
     ynh_handle_getopts_args "$@"
     # ===========================================
 
-    if ynh_mongo_database_exists --database=$db_name; then  # Check if the database exists
-        ynh_mongo_drop_db --database=$db_name  # Remove the database
+    if ynh_mongo_database_exists --database=$db_name; then # Check if the database exists
+        ynh_mongo_drop_db --database=$db_name              # Remove the database
     else
         ynh_print_warn "Database $db_name not found"
     fi
@@ -262,8 +260,7 @@ ynh_install_mongo() {
 #
 ynh_remove_mongo() {
     # Only remove the mongodb service if it is not installed.
-    if ! _ynh_apt_package_is_installed "mongodb*"
-    then
+    if ! _ynh_apt_package_is_installed "mongodb*"; then
         ynh_print_info "Removing MongoDB service..."
         mongodb_servicename=mongod
         # Remove the mongodb service
diff --git a/helpers/helpers.v2.1.d/nginx b/helpers/helpers.v2.1.d/nginx
index 75fa0f0d4..7797621d4 100644
--- a/helpers/helpers.v2.1.d/nginx
+++ b/helpers/helpers.v2.1.d/nginx
@@ -39,7 +39,6 @@ ynh_config_remove_nginx() {
     ynh_systemctl --service=nginx --action=reload
 }
 
-
 # Regen the nginx config in a change url context
 #
 # usage: ynh_config_change_url_nginx
@@ -47,7 +46,7 @@ ynh_config_change_url_nginx() {
 
     # Make a backup of the original NGINX config file if manually modified
     # (nb: this is possibly different from the same instruction called by
-    # ynh_config_add inside ynh_config_add_nginx because the path may have 
+    # ynh_config_add inside ynh_config_add_nginx because the path may have
     # changed if we're changing the domain too...)
     local old_nginx_conf_path=/etc/nginx/conf.d/$old_domain.d/$app.conf
     ynh_backup_if_checksum_is_different "$old_nginx_conf_path"
diff --git a/helpers/helpers.v2.1.d/permission b/helpers/helpers.v2.1.d/permission
index cccba8256..d3ebc5a12 100644
--- a/helpers/helpers.v2.1.d/permission
+++ b/helpers/helpers.v2.1.d/permission
@@ -169,7 +169,7 @@ ynh_permission_exists() {
     # ===========================================
 
     yunohost user permission list "$app" --output-as json --quiet \
-        | jq -e --arg perm "$app.$permission" '.permissions[$perm]' >/dev/null
+        | jq -e --arg perm "$app.$permission" '.permissions[$perm]' > /dev/null
 }
 
 # Redefine the url associated to a permission
@@ -301,7 +301,7 @@ ynh_permission_has_user() {
     # Check both allowed and corresponding_users sections in the json
     for section in "allowed" "corresponding_users"; do
         if yunohost user permission info "$app.$permission" --output-as json --quiet \
-            | jq -e --arg user $user --arg section $section '.[$section] | index($user)' >/dev/null; then
+            | jq -e --arg user $user --arg section $section '.[$section] | index($user)' > /dev/null; then
             return 0
         fi
     done
diff --git a/helpers/helpers.v2.1.d/php b/helpers/helpers.v2.1.d/php
index b7165e010..a28188621 100644
--- a/helpers/helpers.v2.1.d/php
+++ b/helpers/helpers.v2.1.d/php
@@ -59,9 +59,9 @@ ynh_config_add_phpfpm() {
     # Apps willing to tweak these should use ynh_setting_set_default_value (in install and upgrade?)
     #
     local php_upload_max_filesize=${php_upload_max_filesize:-50M}
-    local php_process_management=${php_process_management:-ondemand}  # alternatively 'dynamic' or 'static'
+    local php_process_management=${php_process_management:-ondemand} # alternatively 'dynamic' or 'static'
     local php_max_children=${php_max_children:-$(_default_php_max_children)}
-    local php_memory_limit=${php_memory_limit:-128M}  # default value is from global php.ini
+    local php_memory_limit=${php_memory_limit:-128M} # default value is from global php.ini
 
     local phpfpm_template=$(mktemp)
     cat << EOF > $phpfpm_template
@@ -102,7 +102,7 @@ EOF
 
     # Concatene the extra config
     if [ -e $YNH_APP_BASEDIR/conf/extra_php-fpm.conf ]; then
-        cat $YNH_APP_BASEDIR/conf/extra_php-fpm.conf >>"$phpfpm_template"
+        cat $YNH_APP_BASEDIR/conf/extra_php-fpm.conf >> "$phpfpm_template"
     fi
 
     # Make sure the fpm pool dir exists
@@ -111,7 +111,7 @@ EOF
     ynh_config_add --template="$phpfpm_template" --destination="/etc/php/$php_version/fpm/pool.d/$app.conf"
 
     # Validate that the new php conf doesn't break php-fpm entirely
-    if ! php-fpm${php_version} --test 2>/dev/null; then
+    if ! php-fpm${php_version} --test 2> /dev/null; then
         php-fpm${php_version} --test || true
         ynh_safe_rm "/etc/php/$php_version/fpm/pool.d/$app.conf"
         ynh_die "The new configuration broke php-fpm?"
diff --git a/helpers/helpers.v2.1.d/redis b/helpers/helpers.v2.1.d/redis
index dc3ed2893..0425b5fd4 100644
--- a/helpers/helpers.v2.1.d/redis
+++ b/helpers/helpers.v2.1.d/redis
@@ -13,10 +13,8 @@ ynh_redis_get_free_db() {
 
     db=0
     # default Debian setting is 15 databases
-    for i in $(seq 0 "$max")
-    do
-        if ! echo "$result" | grep -q "db$i"
-        then
+    for i in $(seq 0 "$max"); do
+        if ! echo "$result" | grep -q "db$i"; then
             db=$i
             break 1
         fi
diff --git a/helpers/helpers.v2.1.d/ruby b/helpers/helpers.v2.1.d/ruby
index 22b28d9ad..45559a2f3 100644
--- a/helpers/helpers.v2.1.d/ruby
+++ b/helpers/helpers.v2.1.d/ruby
@@ -25,7 +25,7 @@ _ynh_load_ruby_in_path_and_other_tweaks() {
 
     # Sets the local application-specific Ruby version
     pushd ${install_dir}
-        $RBENV_INSTALL_DIR/bin/rbenv local $ruby_version
+    $RBENV_INSTALL_DIR/bin/rbenv local $ruby_version
     popd
 }
 
@@ -41,7 +41,7 @@ _ynh_load_ruby_in_path_and_other_tweaks() {
 # - `$ruby_dir`, the directory containing the specific version of ruby, which may be used in the systemd config too (e.g. `ExecStart=__RUBY_DIR__/ruby foo bar`)
 #
 # This helper also creates a /etc/profile.d/rbenv.sh that configures PATH environment for rbenv
-ynh_ruby_install () {
+ynh_ruby_install() {
 
     [[ -n "${ruby_version:-}" ]] || ynh_die "\$ruby_version should be defined prior to calling ynh_ruby_install"
 
@@ -59,31 +59,31 @@ ynh_ruby_install () {
     rbenv="$(command -v rbenv $RBENV_INSTALL_DIR/bin/rbenv | grep "$RBENV_INSTALL_DIR/bin/rbenv" | head -1)"
     if [ -n "$rbenv" ]; then
         pushd "${rbenv%/*/*}"
-            if git remote -v 2>/dev/null | grep "https://github.com/rbenv/rbenv.git"; then
-                echo "Updating rbenv..."
-                git pull -q --tags origin master
-                _ynh_ruby_try_bash_extension
-            else
-                echo "Reinstalling rbenv..."
-                cd ..
-                ynh_safe_rm $RBENV_INSTALL_DIR
-                mkdir -p $RBENV_INSTALL_DIR
-                cd $RBENV_INSTALL_DIR
-                git init -q
-                git remote add -f -t master origin https://github.com/rbenv/rbenv.git > /dev/null 2>&1
-                git checkout -q -b master origin/master
-                _ynh_ruby_try_bash_extension
-                rbenv=$RBENV_INSTALL_DIR/bin/rbenv
-            fi
-        popd
-    else
-        echo "Installing rbenv..."
-        pushd $RBENV_INSTALL_DIR
+        if git remote -v 2> /dev/null | grep "https://github.com/rbenv/rbenv.git"; then
+            echo "Updating rbenv..."
+            git pull -q --tags origin master
+            _ynh_ruby_try_bash_extension
+        else
+            echo "Reinstalling rbenv..."
+            cd ..
+            ynh_safe_rm $RBENV_INSTALL_DIR
+            mkdir -p $RBENV_INSTALL_DIR
+            cd $RBENV_INSTALL_DIR
             git init -q
             git remote add -f -t master origin https://github.com/rbenv/rbenv.git > /dev/null 2>&1
             git checkout -q -b master origin/master
             _ynh_ruby_try_bash_extension
             rbenv=$RBENV_INSTALL_DIR/bin/rbenv
+        fi
+        popd
+    else
+        echo "Installing rbenv..."
+        pushd $RBENV_INSTALL_DIR
+        git init -q
+        git remote add -f -t master origin https://github.com/rbenv/rbenv.git > /dev/null 2>&1
+        git checkout -q -b master origin/master
+        _ynh_ruby_try_bash_extension
+        rbenv=$RBENV_INSTALL_DIR/bin/rbenv
         popd
     fi
 
@@ -92,10 +92,10 @@ ynh_ruby_install () {
     ruby_build="$(command -v "$RBENV_INSTALL_DIR"/plugins/*/bin/rbenv-install rbenv-install | head -1)"
     if [ -n "$ruby_build" ]; then
         pushd "${ruby_build%/*/*}"
-            if git remote -v 2>/dev/null | grep "https://github.com/rbenv/ruby-build.git"; then
-                echo "Updating ruby-build..."
-                git pull -q origin master
-            fi
+        if git remote -v 2> /dev/null | grep "https://github.com/rbenv/ruby-build.git"; then
+            echo "Updating ruby-build..."
+            git pull -q origin master
+        fi
         popd
     else
         echo "Installing ruby-build..."
@@ -105,10 +105,10 @@ ynh_ruby_install () {
     rbenv_alias="$(command -v "$RBENV_INSTALL_DIR"/plugins/*/bin/rbenv-alias rbenv-alias | head -1)"
     if [ -n "$rbenv_alias" ]; then
         pushd "${rbenv_alias%/*/*}"
-            if git remote -v 2>/dev/null | grep "https://github.com/tpope/rbenv-aliases.git"; then
-                echo "Updating rbenv-aliases..."
-                git pull -q origin master
-            fi
+        if git remote -v 2> /dev/null | grep "https://github.com/tpope/rbenv-aliases.git"; then
+            echo "Updating rbenv-aliases..."
+            git pull -q origin master
+        fi
         popd
     else
         echo "Installing rbenv-aliases..."
@@ -118,10 +118,10 @@ ynh_ruby_install () {
     rbenv_latest="$(command -v "$RBENV_INSTALL_DIR"/plugins/*/bin/rbenv-latest rbenv-latest | head -1)"
     if [ -n "$rbenv_latest" ]; then
         pushd "${rbenv_latest%/*/*}"
-            if git remote -v 2>/dev/null | grep "https://github.com/momo-lab/xxenv-latest.git"; then
-                echo "Updating xxenv-latest..."
-                git pull -q origin master
-            fi
+        if git remote -v 2> /dev/null | grep "https://github.com/momo-lab/xxenv-latest.git"; then
+            echo "Updating xxenv-latest..."
+            git pull -q origin master
+        fi
         popd
     else
         echo "Installing xxenv-latest..."
@@ -153,8 +153,7 @@ ynh_ruby_install () {
     ruby_version=$final_ruby_version
 
     # Remove app virtualenv
-    if rbenv alias --list | grep --quiet "$app "
-    then
+    if rbenv alias --list | grep --quiet "$app "; then
         rbenv alias $app --remove
     fi
 
@@ -165,7 +164,7 @@ ynh_ruby_install () {
     _ynh_ruby_cleanup
 
     # Set environment for Ruby users
-    echo  "#rbenv
+    echo "#rbenv
 export RBENV_ROOT=$RBENV_INSTALL_DIR
 export PATH=\"$RBENV_INSTALL_DIR/bin:$PATH\"
 eval \"\$(rbenv init -)\"
@@ -182,7 +181,7 @@ eval \"\$(rbenv init -)\"
 # This helper will also cleanup unused Ruby versions
 #
 # usage: ynh_ruby_remove
-ynh_ruby_remove () {
+ynh_ruby_remove() {
 
     [[ -n "${ruby_version:-}" ]] || ynh_die "\$ruby_version should be defined prior to calling ynh_ruby_remove"
 
@@ -208,34 +207,29 @@ ynh_ruby_remove () {
 # This helper will check what Ruby version are no more required,
 # and uninstall them
 # If no app uses Ruby, rbenv will be also removed.
-_ynh_ruby_cleanup () {
+_ynh_ruby_cleanup() {
 
     # List required Ruby versions
     local installed_apps=$(yunohost app list | grep -oP 'id: \K.*$')
     local required_ruby_versions=""
-    for installed_app in $installed_apps
-    do
+    for installed_app in $installed_apps; do
         local installed_app_ruby_version=$(ynh_app_setting_get --app=$installed_app --key="ruby_version")
-        if [[ -n "$installed_app_ruby_version" ]]
-        then
+        if [[ -n "$installed_app_ruby_version" ]]; then
             required_ruby_versions="${installed_app_ruby_version}\n${required_ruby_versions}"
         fi
     done
 
     # Remove no more needed Ruby versions
     local installed_ruby_versions=$(rbenv versions --bare --skip-aliases | grep -Ev '/')
-    for installed_ruby_version in $installed_ruby_versions
-    do
-        if ! echo ${required_ruby_versions} | grep -q "${installed_ruby_version}"
-        then
+    for installed_ruby_version in $installed_ruby_versions; do
+        if ! echo ${required_ruby_versions} | grep -q "${installed_ruby_version}"; then
             echo "Removing Ruby-$installed_ruby_version"
             $RBENV_INSTALL_DIR/bin/rbenv uninstall --force $installed_ruby_version
         fi
     done
 
     # If none Ruby version is required
-    if [[ -z "$required_ruby_versions" ]]
-    then
+    if [[ -z "$required_ruby_versions" ]]; then
         # Remove rbenv environment configuration
         echo "Removing rbenv"
         ynh_safe_rm "$RBENV_INSTALL_DIR"
@@ -244,9 +238,9 @@ _ynh_ruby_cleanup () {
 }
 
 _ynh_ruby_try_bash_extension() {
-  if [ -x src/configure ]; then
-    src/configure && make -C src 2>&1 || {
-      ynh_print_info "Optional bash extension failed to build, but things will still work normally."
-    }
-  fi
+    if [ -x src/configure ]; then
+        src/configure && make -C src 2>&1 || {
+            ynh_print_info "Optional bash extension failed to build, but things will still work normally."
+        }
+    fi
 }
diff --git a/helpers/helpers.v2.1.d/setting b/helpers/helpers.v2.1.d/setting
index 01480331c..a3b944627 100644
--- a/helpers/helpers.v2.1.d/setting
+++ b/helpers/helpers.v2.1.d/setting
@@ -98,7 +98,7 @@ ynh_app_setting() {
     # Trick to only re-enable debugging if it was set before
     local xtrace_enable=$(set +o | grep xtrace)
     set +o xtrace # set +x
-    ACTION="$1" APP="$2" KEY="$3" VALUE="${4:-}" python3 - <<EOF
+    ACTION="$1" APP="$2" KEY="$3" VALUE="${4:-}" python3 - << EOF
 import os, yaml, sys
 app, action = os.environ['APP'], os.environ['ACTION'].lower()
 key, value = os.environ['KEY'], os.environ.get('VALUE', None)
@@ -125,15 +125,11 @@ EOF
 
 # Legacy: auto-convert phpversion to php_version (for consistency with nodejs_version, ruby_version, ...)
 # This has to be here and not in the "php" code file because ynh_app_setting_set/delete need to be defined @_@
-if [[ -n "${app:-}" ]] && [[ -n "${phpversion:-}" ]]
-then
-    if [[ -z "${php_version:-}" ]]
-    then
+if [[ -n "${app:-}" ]] && [[ -n "${phpversion:-}" ]]; then
+    if [[ -z "${php_version:-}" ]]; then
         php_version=$phpversion
         ynh_app_setting_set --key=php_version --value=$php_version
     fi
     ynh_app_setting_delete --key=phpversion
     unset phpversion
 fi
-
-
diff --git a/helpers/helpers.v2.1.d/sources b/helpers/helpers.v2.1.d/sources
index 4d7ed1d1e..2ee1ba327 100644
--- a/helpers/helpers.v2.1.d/sources
+++ b/helpers/helpers.v2.1.d/sources
@@ -74,8 +74,7 @@ ynh_setup_source() {
     # ===========================================
 
     local sources_json=$(ynh_read_manifest "resources.sources[\"$source_id\"]")
-    if jq -re ".url" <<< "$sources_json"
-    then
+    if jq -re ".url" <<< "$sources_json"; then
         local arch_prefix=""
     else
         local arch_prefix=".$YNH_ARCH"
@@ -93,25 +92,18 @@ ynh_setup_source() {
     [[ -n "$src_url" ]] || ynh_die "No URL defined for source $source_id$arch_prefix ?"
     [[ -n "$src_sum" ]] || ynh_die "No sha256 sum defined for source $source_id$arch_prefix ?"
 
-    if [[ -z "$src_format" ]]
-    then
-        if [[ "$src_url" =~ ^.*\.zip$ ]] || [[ "$src_url" =~ ^.*/zipball/.*$ ]]
-        then
+    if [[ -z "$src_format" ]]; then
+        if [[ "$src_url" =~ ^.*\.zip$ ]] || [[ "$src_url" =~ ^.*/zipball/.*$ ]]; then
             src_format="zip"
-        elif [[ "$src_url" =~ ^.*\.tar\.gz$ ]] || [[ "$src_url" =~ ^.*\.tgz$ ]] || [[ "$src_url" =~ ^.*/tar\.gz/.*$ ]] || [[ "$src_url" =~ ^.*/tarball/.*$ ]]
-        then
+        elif [[ "$src_url" =~ ^.*\.tar\.gz$ ]] || [[ "$src_url" =~ ^.*\.tgz$ ]] || [[ "$src_url" =~ ^.*/tar\.gz/.*$ ]] || [[ "$src_url" =~ ^.*/tarball/.*$ ]]; then
             src_format="tar.gz"
-        elif [[ "$src_url" =~ ^.*\.tar\.xz$ ]]
-        then
+        elif [[ "$src_url" =~ ^.*\.tar\.xz$ ]]; then
             src_format="tar.xz"
-        elif [[ "$src_url" =~ ^.*\.tar\.bz2$ ]]
-        then
+        elif [[ "$src_url" =~ ^.*\.tar\.bz2$ ]]; then
             src_format="tar.bz2"
-        elif [[ "$src_url" =~ ^.*\.tar$ ]]
-        then
+        elif [[ "$src_url" =~ ^.*\.tar$ ]]; then
             src_format="tar"
-        elif [[ -z "$src_extract" ]]
-        then
+        elif [[ -z "$src_extract" ]]; then
             src_extract="false"
         fi
     fi
@@ -120,8 +112,7 @@ ynh_setup_source() {
     src_format=$(echo "$src_format" | tr '[:upper:]' '[:lower:]')
     src_extract=${src_extract:-true}
 
-    if [[ "$src_extract" != "true" ]] && [[ "$src_extract" != "false" ]]
-    then
+    if [[ "$src_extract" != "true" ]] && [[ "$src_extract" != "false" ]]; then
         ynh_die "For source $source_id, expected either 'true' or 'false' for the extract parameter"
     fi
 
@@ -135,14 +126,12 @@ ynh_setup_source() {
         [ -n "$src_url" ] || ynh_die "Couldn't parse SOURCE_URL from $src_file_path ?"
 
         # If the file was prefetched but somehow doesn't match the sum, rm and redownload it
-        if [ -e "$src_filename" ] && ! echo "${src_sum} ${src_filename}" | sha256sum --check --status
-        then
+        if [ -e "$src_filename" ] && ! echo "${src_sum} ${src_filename}" | sha256sum --check --status; then
             rm -f "$src_filename"
         fi
 
         # Only redownload the file if it wasnt prefetched
-        if [ ! -e "$src_filename" ]
-        then
+        if [ ! -e "$src_filename" ]; then
             # NB. we have to declare the var as local first,
             # otherwise 'local foo=$(false) || echo 'pwet'" does'nt work
             # because local always return 0 ...
@@ -153,8 +142,7 @@ ynh_setup_source() {
         fi
 
         # Check the control sum
-        if ! echo "${src_sum} ${src_filename}" | sha256sum --check --status
-        then
+        if ! echo "${src_sum} ${src_filename}" | sha256sum --check --status; then
             local actual_sum="$(sha256sum ${src_filename} | cut --delimiter=' ' --fields=1)"
             local actual_size="$(du -hs ${src_filename} | cut --fields=1)"
             rm -f ${src_filename}
@@ -185,8 +173,7 @@ ynh_setup_source() {
     mkdir --parents "$dest_dir"
 
     if [[ "$src_extract" == "false" ]]; then
-        if [[ -z "$src_rename" ]]
-        then
+        if [[ -z "$src_rename" ]]; then
             mv $src_filename $dest_dir
         else
             mv $src_filename $dest_dir/$src_rename
diff --git a/helpers/helpers.v2.1.d/string b/helpers/helpers.v2.1.d/string
index d03fcff19..e3ed683a4 100644
--- a/helpers/helpers.v2.1.d/string
+++ b/helpers/helpers.v2.1.d/string
@@ -18,7 +18,7 @@ ynh_string_random() {
     filter=${filter:-'A-Za-z0-9'}
     # ===========================================
 
-    dd if=/dev/urandom bs=1 count=1000 2>/dev/null \
+    dd if=/dev/urandom bs=1 count=1000 2> /dev/null \
         | tr --complement --delete "$filter" \
         | sed --quiet 's/\(.\{'"$length"'\}\).*/\1/p'
 }
diff --git a/helpers/helpers.v2.1.d/systemd b/helpers/helpers.v2.1.d/systemd
index b8ff84fd1..64079e6ef 100644
--- a/helpers/helpers.v2.1.d/systemd
+++ b/helpers/helpers.v2.1.d/systemd
@@ -68,8 +68,7 @@ ynh_systemctl() {
     # ===========================================
 
     # On CI, use length=100 because it's sometime hell to debug otherwise for super-long output
-    if ynh_in_ci_tests && [ $length -le 20 ]
-    then
+    if ynh_in_ci_tests && [ $length -le 20 ]; then
         length=100
     fi
 
@@ -84,12 +83,12 @@ ynh_systemctl() {
         # Following the starting of the app in its log
         if [ "$log_path" == "systemd" ]; then
             # Read the systemd journal
-            journalctl --unit=$service --follow --since=-0 --quiet >"$templog" &
+            journalctl --unit=$service --follow --since=-0 --quiet > "$templog" &
             # Get the PID of the journalctl command
             local pid_tail=$!
         else
             # Read the specified log file
-            tail --follow=name --retry --lines=0 "$log_path" >"$templog" 2>&1 &
+            tail --follow=name --retry --lines=0 "$log_path" > "$templog" 2>&1 &
             # Get the PID of the tail command
             local pid_tail=$!
         fi
@@ -139,8 +138,7 @@ ynh_systemctl() {
             # Also check the timeout using actual timestamp, because sometimes for some reason,
             # journalctl may take a huge time to run, and we end up waiting literally an entire hour
             # instead of 5 min ...
-            if [[ "$(( $(date +%s) - $starttime))" -gt "$timeout" ]]
-            then
+            if [[ "$(($(date +%s) - $starttime))" -gt "$timeout" ]]; then
                 i=$timeout
                 break
             fi
@@ -160,8 +158,7 @@ ynh_systemctl() {
             fi
 
             # If we tried to reload/start/restart the service but systemctl consider it to be still inactive/broken, then handle it as a failure
-            if ([ "$action" == "reload" ] || [ "$action" == "start" ] || [ "$action" == "restart" ]) && ! systemctl --quiet is-active $service
-            then
+            if ([ "$action" == "reload" ] || [ "$action" == "start" ] || [ "$action" == "restart" ]) && ! systemctl --quiet is-active $service; then
                 _ynh_clean_check_starting
                 return 1
             fi
diff --git a/helpers/helpers.v2.1.d/systemuser b/helpers/helpers.v2.1.d/systemuser
index 720a6ec28..d8b27a9bf 100644
--- a/helpers/helpers.v2.1.d/systemuser
+++ b/helpers/helpers.v2.1.d/systemuser
@@ -12,7 +12,7 @@ ynh_system_user_exists() {
     ynh_handle_getopts_args "$@"
     # ===========================================
 
-    getent passwd "$username" &>/dev/null
+    getent passwd "$username" &> /dev/null
 }
 
 # Check if a group exists on the system
@@ -27,7 +27,7 @@ ynh_system_group_exists() {
     ynh_handle_getopts_args "$@"
     # ===========================================
 
-    getent group "$group" &>/dev/null
+    getent group "$group" &> /dev/null
 }
 
 # Create a system user
diff --git a/helpers/helpers.v2.1.d/templating b/helpers/helpers.v2.1.d/templating
index a00cf18ca..3da3a1e2b 100644
--- a/helpers/helpers.v2.1.d/templating
+++ b/helpers/helpers.v2.1.d/templating
@@ -29,7 +29,7 @@
 # This option is meant for advanced use-cases where the "simple" templating
 # mode ain't enough because you need conditional blocks or loops.
 #
-# For a full documentation of jinja's syntax you can refer to: 
+# For a full documentation of jinja's syntax you can refer to:
 # https://jinja.palletsprojects.com/en/3.1.x/templates/
 #
 # Note that in YunoHost context, all variables are from shell variables and therefore are strings
@@ -70,10 +70,9 @@ ynh_config_add() {
     chmod 640 $destination
     _ynh_apply_default_permissions $destination
 
-    if [[ "$jinja" == 1 ]]
-    then
+    if [[ "$jinja" == 1 ]]; then
         # This is ran in a subshell such that the "export" does not "contaminate" the main process
-        (
+        (   
             export $(compgen -v)
             j2 "$template_path" -f env -o $destination
         )
diff --git a/helpers/helpers.v2.1.d/utils b/helpers/helpers.v2.1.d/utils
index 045652e23..bda5391cd 100644
--- a/helpers/helpers.v2.1.d/utils
+++ b/helpers/helpers.v2.1.d/utils
@@ -9,8 +9,7 @@ YNH_APP_BASEDIR=${YNH_APP_BASEDIR:-$(realpath ..)}
 ynh_exit_properly() {
     local exit_code=$?
 
-    if [[ "${YNH_APP_ACTION:-}" =~ ^install$|^upgrade$|^restore$ ]]
-    then
+    if [[ "${YNH_APP_ACTION:-}" =~ ^install$|^upgrade$|^restore$ ]]; then
         rm -rf "/var/cache/yunohost/download/"
     fi
 
@@ -47,8 +46,7 @@ ynh_abort_if_errors() {
 }
 
 # When running an app script, auto-enable ynh_abort_if_errors except for remove script
-if [[ "${YNH_CONTEXT:-}" != "regenconf" ]] && [[ "${YNH_APP_ACTION}" != "remove" ]]
-then
+if [[ "${YNH_CONTEXT:-}" != "regenconf" ]] && [[ "${YNH_APP_ACTION}" != "remove" ]]; then
     ynh_abort_if_errors
 fi
 
@@ -124,8 +122,7 @@ _acceptable_path_to_delete() {
     local forbidden_paths=$(ls -d / /* /{var,home,usr}/* /etc/{default,sudoers.d,yunohost,cron*} /etc/yunohost/{apps,domains,hooks.d} /opt/yunohost 2> /dev/null)
 
     # Legacy : A couple apps still have data in /home/$app ...
-    if [[ -n "${app:-}" ]]
-    then
+    if [[ -n "${app:-}" ]]; then
         forbidden_paths=$(echo "$forbidden_paths" | grep -v "/home/$app")
     fi
 
@@ -223,31 +220,27 @@ _ynh_apply_default_permissions() {
     is_in_dir() {
         # Returns false if parent is empty
         [ -n "$2" ] || return 1
-        local child=$(realpath "$1" 2>/dev/null)
-        local parent=$(realpath "$2" 2>/dev/null)
+        local child=$(realpath "$1" 2> /dev/null)
+        local parent=$(realpath "$2" 2> /dev/null)
         [[ "${child}" =~ ^$parent ]]
     }
 
     # App files can have files of their own
     if ynh_system_user_exists --username="$app"; then
         # If this is a file in $install_dir or $data_dir : it should be owned and read+writable by $app only
-        if [ -f "$target" ] && (is_in_dir "$target" "${install_dir:-}" || is_in_dir "$target" "${data_dir:-}" || is_in_dir "$target" "/etc/$app")
-        then
+        if [ -f "$target" ] && (is_in_dir "$target" "${install_dir:-}" || is_in_dir "$target" "${data_dir:-}" || is_in_dir "$target" "/etc/$app"); then
             chmod 600 "$target"
             chown "$app:$app" "$target"
             return
         fi
         # If this is the install dir (so far this is the only way this helper is called with a directory)
-        if [ "$target" ==  "${install_dir:-}" ]
-        then
+        if [ "$target" == "${install_dir:-}" ]; then
             # Read the group from the install_dir manifest resource
             local group="$(ynh_read_manifest 'resources.install_dir.group' | sed 's/null//g' | sed "s/__APP__/$app/g" | cut -f1 -d:)"
-            if [[ -z "$group" ]]
-            then
+            if [[ -z "$group" ]]; then
                 # We set the group to www-data for webapps that do serve static assets, which therefore need to be readable by nginx ...
                 # The fact that the app needs this is infered by the existence of an nginx.conf and the presence of "alias" or "root" directive
-                if grep -q '^\s*alias\s\|^\s*root\s' "$YNH_APP_BASEDIR/conf/nginx.conf" 2>/dev/null;
-                then
+                if grep -q '^\s*alias\s\|^\s*root\s' "$YNH_APP_BASEDIR/conf/nginx.conf" 2> /dev/null; then
                     group="www-data"
                 # Or default to "$app"
                 else
@@ -292,7 +285,7 @@ ynh_validate_ip() {
     [ "$family" == "4" ] || [ "$family" == "6" ] || return 1
 
     # http://stackoverflow.com/questions/319279/how-to-validate-ip-address-in-python#319298
-    python3 /dev/stdin <<EOF
+    python3 /dev/stdin << EOF
 import socket
 import sys
 family = { "4" : socket.AF_INET, "6" : socket.AF_INET6 }
@@ -390,126 +383,116 @@ ynh_user_list() {
 # from the app's service configuration file (defaults to $app.service, overridable by the packager with `service` setting).
 # If the app relies on a specific PHP version, then `php` will be aliased that version. The PHP command will also be appended with the `phpflags` settings.
 ynh_spawn_app_shell() {
-        local app=$1
+    local app=$1
 
-        # Force Bash to be used to run this helper
-        [[ $0 =~ \/?bash$ ]] || ynh_die "Please use Bash as shell"
+    # Force Bash to be used to run this helper
+    [[ $0 =~ \/?bash$ ]] || ynh_die "Please use Bash as shell"
 
-        # Make sure the app is installed
-        test -d /etc/yunohost/apps/$app || ynh_die "$app is not an installed app ?!"
+    # Make sure the app is installed
+    test -d /etc/yunohost/apps/$app || ynh_die "$app is not an installed app ?!"
 
-        # Make sure the app has its own user
-        id -u "$app" &>/dev/null || ynh_die "There is no \"$app\" system user"
+    # Make sure the app has its own user
+    id -u "$app" &> /dev/null || ynh_die "There is no \"$app\" system user"
 
-        # Make sure the app has an install_dir setting
-        local install_dir=$(ynh_app_setting_get --app=$app --key=install_dir)
-        [ -n "$install_dir" ] || ynh_die "$app has no install_dir setting (does it use packaging format >=2?)"
+    # Make sure the app has an install_dir setting
+    local install_dir=$(ynh_app_setting_get --app=$app --key=install_dir)
+    [ -n "$install_dir" ] || ynh_die "$app has no install_dir setting (does it use packaging format >=2?)"
 
-        # Load the app's service name, or default to $app
-        local service=$(ynh_app_setting_get --app=$app --key=service)
-        [ -z "$service" ] && service=$app;
+    # Load the app's service name, or default to $app
+    local service=$(ynh_app_setting_get --app=$app --key=service)
+    [ -z "$service" ] && service=$app
 
-        # Export HOME variable
-        export HOME=$install_dir;
+    # Export HOME variable
+    export HOME=$install_dir
 
-        # Load the Environment variables from the app's service
-        local env_var=$(systemctl show $service.service -p "Environment" --value)
-        [ -n "$env_var" ] && export $env_var;
+    # Load the Environment variables from the app's service
+    local env_var=$(systemctl show $service.service -p "Environment" --value)
+    [ -n "$env_var" ] && export $env_var
 
-        # Force `php` to its intended version
-        # We use `eval`+`export` since `alias` is not propagated to subshells, even with `export`
-        local phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
-        local phpflags=$(ynh_app_setting_get --app=$app --key=phpflags)
-        if [ -n "$phpversion" ]
-        then
-            eval "php() { php${phpversion} ${phpflags} \"\$@\"; }"
-            export -f php
-        fi
+    # Force `php` to its intended version
+    # We use `eval`+`export` since `alias` is not propagated to subshells, even with `export`
+    local phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
+    local phpflags=$(ynh_app_setting_get --app=$app --key=phpflags)
+    if [ -n "$phpversion" ]; then
+        eval "php() { php${phpversion} ${phpflags} \"\$@\"; }"
+        export -f php
+    fi
 
-        # Source the EnvironmentFiles from the app's service
-        local env_files=($(systemctl show $service.service -p "EnvironmentFiles" --value))
-        if [ ${#env_files[*]} -gt 0 ]
-        then
-            # set -/+a enables and disables new variables being automatically exported. Needed when using `source`.
-            set -a
-            for file in ${env_files[*]}
-            do
-                [[ $file = /* ]] && source $file
-            done
-            set +a
-        fi
+    # Source the EnvironmentFiles from the app's service
+    local env_files=($(systemctl show $service.service -p "EnvironmentFiles" --value))
+    if [ ${#env_files[*]} -gt 0 ]; then
+        # set -/+a enables and disables new variables being automatically exported. Needed when using `source`.
+        set -a
+        for file in ${env_files[*]}; do
+            [[ $file = /* ]] && source $file
+        done
+        set +a
+    fi
 
-        # Activate the Python environment, if it exists
-        if [ -f $install_dir/venv/bin/activate ]
-        then
-            # set -/+a enables and disables new variables being automatically exported. Needed when using `source`.
-            set -a
-            source $install_dir/venv/bin/activate
-            set +a
-        fi
+    # Activate the Python environment, if it exists
+    if [ -f $install_dir/venv/bin/activate ]; then
+        # set -/+a enables and disables new variables being automatically exported. Needed when using `source`.
+        set -a
+        source $install_dir/venv/bin/activate
+        set +a
+    fi
 
-        # cd into the WorkingDirectory set in the service, or default to the install_dir
-        local env_dir=$(systemctl show $service.service -p "WorkingDirectory" --value)
-        [ -z $env_dir ] && env_dir=$install_dir;
-        cd $env_dir
+    # cd into the WorkingDirectory set in the service, or default to the install_dir
+    local env_dir=$(systemctl show $service.service -p "WorkingDirectory" --value)
+    [ -z $env_dir ] && env_dir=$install_dir
+    cd $env_dir
 
-        # Spawn the app shell
-        su -s /bin/bash $app
+    # Spawn the app shell
+    su -s /bin/bash $app
 }
 
 # Add swap
 #
 # usage: ynh_add_swap --size=SWAP in Mb
 # | arg: -s, --size= - Amount of SWAP to add in Mb.
-ynh_add_swap () {
-  if systemd-detect-virt --container --quiet; then
-    ynh_print_warn --message="You are inside a container/VM. swap will not be added, but that can cause troubles for the app $app. Please make sure you have enough RAM available."
-    return
-  fi
+ynh_add_swap() {
+    if systemd-detect-virt --container --quiet; then
+        ynh_print_warn --message="You are inside a container/VM. swap will not be added, but that can cause troubles for the app $app. Please make sure you have enough RAM available."
+        return
+    fi
 
     # Declare an array to define the options of this helper.
-    declare -Ar args_array=( [s]=size= )
+    declare -Ar args_array=([s]=size=)
     local size
     # Manage arguments with getopts
     ynh_handle_getopts_args "$@"
 
-    local swap_max_size=$(( $size * 1024 ))
+    local swap_max_size=$(($size * 1024))
 
     local free_space=$(df --output=avail / | sed 1d)
     # Because we don't want to fill the disk with a swap file, divide by 2 the available space.
-    local usable_space=$(( $free_space / 2 ))
+    local usable_space=$(($free_space / 2))
 
     SD_CARD_CAN_SWAP=${SD_CARD_CAN_SWAP:-0}
 
     # Swap on SD card only if it's is specified
-    if ynh_is_main_device_a_sd_card && [ "$SD_CARD_CAN_SWAP" == "0" ]
-    then
+    if ynh_is_main_device_a_sd_card && [ "$SD_CARD_CAN_SWAP" == "0" ]; then
         ynh_print_warn --message="The main mountpoint of your system '/' is on an SD card, swap will not be added to prevent some damage of this one, but that can cause troubles for the app $app. If you still want activate the swap, you can relaunch the command preceded by 'SD_CARD_CAN_SWAP=1'"
         return
     fi
 
     # Compare the available space with the size of the swap.
     # And set a acceptable size from the request
-    if [ $usable_space -ge $swap_max_size ]
-    then
+    if [ $usable_space -ge $swap_max_size ]; then
         local swap_size=$swap_max_size
-    elif [ $usable_space -ge $(( $swap_max_size / 2 )) ]
-    then
-        local swap_size=$(( $swap_max_size / 2 ))
-    elif [ $usable_space -ge $(( $swap_max_size / 3 )) ]
-    then
-        local swap_size=$(( $swap_max_size / 3 ))
-    elif [ $usable_space -ge $(( $swap_max_size / 4 )) ]
-    then
-        local swap_size=$(( $swap_max_size / 4 ))
+    elif [ $usable_space -ge $(($swap_max_size / 2)) ]; then
+        local swap_size=$(($swap_max_size / 2))
+    elif [ $usable_space -ge $(($swap_max_size / 3)) ]; then
+        local swap_size=$(($swap_max_size / 3))
+    elif [ $usable_space -ge $(($swap_max_size / 4)) ]; then
+        local swap_size=$(($swap_max_size / 4))
     else
         echo "Not enough space left for a swap file" >&2
         local swap_size=0
     fi
 
     # If there's enough space for a swap, and no existing swap here
-    if [ $swap_size -ne 0 ] && [ ! -e /swap_$app ]
-    then
+    if [ $swap_size -ne 0 ] && [ ! -e /swap_$app ]; then
         # Create file
         truncate -s 0 /swap_$app
 
@@ -517,8 +500,7 @@ ynh_add_swap () {
         chattr +C /swap_$app
 
         # Preallocate space for the swap file, fallocate may sometime not be used, use dd instead in this case
-        if ! fallocate -l ${swap_size}K /swap_$app
-        then
+        if ! fallocate -l ${swap_size}K /swap_$app; then
             dd if=/dev/zero of=/swap_$app bs=1024 count=${swap_size}
         fi
         chmod 0600 /swap_$app
@@ -531,10 +513,9 @@ ynh_add_swap () {
     fi
 }
 
-ynh_del_swap () {
+ynh_del_swap() {
     # If there a swap at this place
-    if [ -e /swap_$app ]
-    then
+    if [ -e /swap_$app ]; then
         # Clean the fstab
         sed -i "/#Swap added by $app/d" /etc/fstab
         # Desactive the swap file
@@ -549,16 +530,15 @@ ynh_del_swap () {
 # [internal]
 #
 # return 0 if it's an SD card, else 1
-ynh_is_main_device_a_sd_card () {
-  if [ "$(systemd-detect-virt)" != "none" ]; then
-    # Assume virtualization does not take place on SD card
-    return 1
-  fi
+ynh_is_main_device_a_sd_card() {
+    if [ "$(systemd-detect-virt)" != "none" ]; then
+        # Assume virtualization does not take place on SD card
+        return 1
+    fi
 
     local main_device=$(lsblk --output PKNAME --noheadings $(findmnt / --nofsroot --uniq --output source --noheadings --first-only))
 
-    if echo $main_device | grep --quiet "mmc" && [ $(tail -n1 /sys/block/$main_device/queue/rotational) == "0" ]
-    then
+    if echo $main_device | grep --quiet "mmc" && [ $(tail -n1 /sys/block/$main_device/queue/rotational) == "0" ]; then
         return 0
     else
         return 1
@@ -570,33 +550,33 @@ ynh_is_main_device_a_sd_card () {
 # usage: ynh_smart_mktemp --min_size="Min size"
 #
 # | arg: -s, --min_size= - Minimal size needed for the temporary directory, in Mb
-ynh_smart_mktemp () {
+ynh_smart_mktemp() {
     # Declare an array to define the options of this helper.
-    declare -Ar args_array=( [s]=min_size= )
+    declare -Ar args_array=([s]=min_size=)
     local min_size
     # Manage arguments with getopts
     ynh_handle_getopts_args "$@"
 
     min_size="${min_size:-300}"
     # Transform the minimum size from megabytes to kilobytes
-    min_size=$(( $min_size * 1024 ))
+    min_size=$(($min_size * 1024))
 
     # Check if there's enough free space in a directory
-    is_there_enough_space () {
-            local free_space=$(df --output=avail "$1" | sed 1d)
-            test $free_space -ge $min_size
+    is_there_enough_space() {
+        local free_space=$(df --output=avail "$1" | sed 1d)
+        test $free_space -ge $min_size
     }
 
     if is_there_enough_space /tmp; then
-            local tmpdir=/tmp
+        local tmpdir=/tmp
     elif is_there_enough_space /var; then
-            local tmpdir=/var
+        local tmpdir=/var
     elif is_there_enough_space /; then
-            local tmpdir=/
+        local tmpdir=/
     elif is_there_enough_space /home; then
-            local tmpdir=/home
+        local tmpdir=/home
     else
-            ynh_die "Insufficient free space to continue..."
+        ynh_die "Insufficient free space to continue..."
     fi
 
     echo "$(mktemp --directory --tmpdir="$tmpdir")"
diff --git a/hooks/backup/50-conf_manually_modified_files b/hooks/backup/50-conf_manually_modified_files
index bdea14113..299b52b75 100644
--- a/hooks/backup/50-conf_manually_modified_files
+++ b/hooks/backup/50-conf_manually_modified_files
@@ -6,7 +6,7 @@ YNH_CWD="${YNH_BACKUP_DIR%/}/conf/manually_modified_files"
 mkdir -p "$YNH_CWD"
 cd "$YNH_CWD"
 
-yunohost tools shell -c "from yunohost.regenconf import manually_modified_files; print('\n'.join(manually_modified_files()))" >./manually_modified_files_list
+yunohost tools shell -c "from yunohost.regenconf import manually_modified_files; print('\n'.join(manually_modified_files()))" > ./manually_modified_files_list
 
 ynh_backup --src_path="./manually_modified_files_list"
 
diff --git a/hooks/conf_regen/01-yunohost b/hooks/conf_regen/01-yunohost
index ac92d5300..5701a8997 100755
--- a/hooks/conf_regen/01-yunohost
+++ b/hooks/conf_regen/01-yunohost
@@ -14,7 +14,7 @@ do_init_regen() {
 
     # set default current_host
     [[ -f /etc/yunohost/current_host ]] \
-        || echo "yunohost.org" >/etc/yunohost/current_host
+        || echo "yunohost.org" > /etc/yunohost/current_host
 
     # copy default services and firewall
     [[ -f /etc/yunohost/firewall.yml ]] \
@@ -45,7 +45,7 @@ do_init_regen() {
     chown root:root /home/yunohost.backup/archives # This is later changed to root:admins once the admins group exists
 
     # Empty ssowat json persistent conf
-    echo "{}" >'/etc/ssowat/conf.json.persistent'
+    echo "{}" > '/etc/ssowat/conf.json.persistent'
     chmod 644 /etc/ssowat/conf.json.persistent
     chown root:root /etc/ssowat/conf.json.persistent
 
@@ -74,8 +74,7 @@ do_init_regen() {
 
     # Change dpkg vendor
     # see https://wiki.debian.org/Derivatives/Guidelines#Vendor
-    if readlink -f /etc/dpkg/origins/default | grep -q debian;
-    then
+    if readlink -f /etc/dpkg/origins/default | grep -q debian; then
         rm -f /etc/dpkg/origins/default
         ln -s /etc/dpkg/origins/yunohost /etc/dpkg/origins/default
     fi
@@ -93,19 +92,19 @@ do_pre_regen() {
     # add cron job for diagnosis to be ran at 7h and 19h + a random delay between
     # 0 and 20min, meant to avoid every instances running their diagnosis at
     # exactly the same time, which may overload the diagnosis server.
-    cat >$pending_dir/etc/cron.d/yunohost-diagnosis <<EOF
+    cat > $pending_dir/etc/cron.d/yunohost-diagnosis << EOF
 SHELL=/bin/bash
 0 7,19 * * * root : YunoHost Automatic Diagnosis; sleep \$((RANDOM\\%1200)); yunohost diagnosis run --email > /dev/null 2>/dev/null || echo "Running the automatic diagnosis failed miserably"
 EOF
 
     # Cron job that upgrade the app list everyday
-    cat >$pending_dir/etc/cron.daily/yunohost-fetch-apps-catalog <<EOF
+    cat > $pending_dir/etc/cron.daily/yunohost-fetch-apps-catalog << EOF
 #!/bin/bash
 sleep \$((RANDOM%3600)); yunohost tools update apps > /dev/null
 EOF
 
     # Cron job that renew lets encrypt certificates if there's any that needs renewal
-    cat >$pending_dir/etc/cron.daily/yunohost-certificate-renew <<EOF
+    cat > $pending_dir/etc/cron.daily/yunohost-certificate-renew << EOF
 #!/bin/bash
 yunohost domain cert renew --email
 EOF
@@ -113,8 +112,8 @@ EOF
     # If we subscribed to a dyndns domain, add the corresponding cron
     # - delay between 0 and 60 secs to spread the check over a 1 min window
     # - do not run the command if some process already has the lock, to avoid queuing hundreds of commands...
-    if ls -l /etc/yunohost/dyndns/K*.key 2>/dev/null; then
-        cat >$pending_dir/etc/cron.d/yunohost-dyndns <<EOF
+    if ls -l /etc/yunohost/dyndns/K*.key 2> /dev/null; then
+        cat > $pending_dir/etc/cron.d/yunohost-dyndns << EOF
 SHELL=/bin/bash
 # Every 10 minutes,
 #   - (sleep random 60 is here to spread requests over a 1-min window)
@@ -129,10 +128,9 @@ EOF
     fi
 
     # Skip ntp if inside a container (inspired from the conf of systemd-timesyncd)
-    if systemctl | grep -q 'ntp.service'
-    then
+    if systemctl | grep -q 'ntp.service'; then
         mkdir -p ${pending_dir}/etc/systemd/system/ntp.service.d/
-        cat >${pending_dir}/etc/systemd/system/ntp.service.d/ynh-override.conf <<EOF
+        cat > ${pending_dir}/etc/systemd/system/ntp.service.d/ynh-override.conf << EOF
 [Unit]
 ConditionCapability=CAP_SYS_TIME
 ConditionVirtualization=!container
@@ -141,7 +139,7 @@ EOF
 
     # Make nftable conflict with yunohost-firewall
     mkdir -p ${pending_dir}/etc/systemd/system/nftables.service.d/
-    cat >${pending_dir}/etc/systemd/system/nftables.service.d/ynh-override.conf <<EOF
+    cat > ${pending_dir}/etc/systemd/system/nftables.service.d/ynh-override.conf << EOF
 [Unit]
 # yunohost-firewall and nftables conflict with each other
 Conflicts=yunohost-firewall.service
@@ -151,7 +149,7 @@ EOF
 
     # Don't suspend computer on LidSwitch
     mkdir -p ${pending_dir}/etc/systemd/logind.conf.d/
-    cat >${pending_dir}/etc/systemd/logind.conf.d/ynh-override.conf <<EOF
+    cat > ${pending_dir}/etc/systemd/logind.conf.d/ynh-override.conf << EOF
 [Login]
 HandleLidSwitch=ignore
 HandleLidSwitchDocked=ignore
@@ -192,8 +190,7 @@ do_post_regen() {
     find /etc/systemd/system/*.service -type f | xargs -r chown root:root
     find /etc/systemd/system/*.service -type f | xargs -r chmod 0644
 
-    if ls -l /etc/php/*/fpm/pool.d/*.conf
-    then
+    if ls -l /etc/php/*/fpm/pool.d/*.conf; then
         chown root:root /etc/php/*/fpm/pool.d/*.conf
         chmod 644 /etc/php/*/fpm/pool.d/*.conf
     fi
@@ -222,8 +219,8 @@ do_post_regen() {
     mkdir -p /etc/yunohost/domains
 
     # Misc configuration / state files
-    chown root:root $(ls /etc/yunohost/{*.yml,*.yaml,*.json,mysql,psql} 2>/dev/null | grep -vw mdns.yml)
-    chmod 600 $(ls /etc/yunohost/{*.yml,*.yaml,*.json,mysql,psql} 2>/dev/null)
+    chown root:root $(ls /etc/yunohost/{*.yml,*.yaml,*.json,mysql,psql} 2> /dev/null | grep -vw mdns.yml)
+    chmod 600 $(ls /etc/yunohost/{*.yml,*.yaml,*.json,mysql,psql} 2> /dev/null)
 
     # Apps folder, custom hooks folder
     [[ ! -e /etc/yunohost/hooks.d ]] || (chown root /etc/yunohost/hooks.d && chmod 700 /etc/yunohost/hooks.d)
@@ -235,15 +232,14 @@ do_post_regen() {
     grep -q '^sftp.app:' /etc/group || groupadd sftp.app
 
     # Propagates changes in systemd service config overrides
-    if systemctl | grep -q 'ntp.service'
-    then
+    if systemctl | grep -q 'ntp.service'; then
         [[ ! "$regen_conf_files" =~ "ntp.service.d/ynh-override.conf" ]] || {
             systemctl daemon-reload
             systemctl restart ntp
         }
     fi
     [[ ! "$regen_conf_files" =~ "nftables.service.d/ynh-override.conf" ]] || systemctl daemon-reload
-    [[ ! "$regen_conf_files" =~ "login.conf.d/ynh-override.conf" ]] ||  {
+    [[ ! "$regen_conf_files" =~ "login.conf.d/ynh-override.conf" ]] || {
         systemctl daemon-reload
         systemctl restart systemd-logind
     }
@@ -263,14 +259,12 @@ do_post_regen() {
 
     # Change dpkg vendor
     # see https://wiki.debian.org/Derivatives/Guidelines#Vendor
-    if readlink -f /etc/dpkg/origins/default | grep -q debian;
-    then
+    if readlink -f /etc/dpkg/origins/default | grep -q debian; then
         rm -f /etc/dpkg/origins/default
         ln -s /etc/dpkg/origins/yunohost /etc/dpkg/origins/default
     fi
 
-    if test -e /etc/yunohost/installed && test -e /etc/profile.d/check_yunohost_is_installed.sh
-    then
+    if test -e /etc/yunohost/installed && test -e /etc/profile.d/check_yunohost_is_installed.sh; then
         rm /etc/profile.d/check_yunohost_is_installed.sh
     fi
 }
diff --git a/hooks/conf_regen/02-ssl b/hooks/conf_regen/02-ssl
index 10ef7d83c..cc60bbb83 100755
--- a/hooks/conf_regen/02-ssl
+++ b/hooks/conf_regen/02-ssl
@@ -23,7 +23,7 @@ regen_local_ca() {
     # (Update the serial so that it's specific to this very instance)
     # N.B. : the weird RANDFILE thing comes from:
     # https://stackoverflow.com/questions/94445/using-openssl-what-does-unable-to-write-random-state-mean
-    RANDFILE=.rnd openssl rand -hex 19 >serial
+    RANDFILE=.rnd openssl rand -hex 19 > serial
     rm -f index.txt
     touch index.txt
     cp ${template_dir}/openssl.cnf openssl.ca.cnf
@@ -51,7 +51,7 @@ regen_local_ca() {
 do_init_regen() {
 
     LOGFILE=/tmp/yunohost-ssl-init
-    echo "" >$LOGFILE
+    echo "" > $LOGFILE
     chown root:root $LOGFILE
     chmod 640 $LOGFILE
 
@@ -61,24 +61,24 @@ do_init_regen() {
 
     # create default certificates
     if [[ ! -f "$ynh_ca" ]]; then
-        regen_local_ca yunohost.org >>$LOGFILE
+        regen_local_ca yunohost.org >> $LOGFILE
     fi
 
     if [[ ! -f "$ynh_crt" ]]; then
-        echo -e "\n# Creating initial key and certificate \n" >>$LOGFILE
+        echo -e "\n# Creating initial key and certificate \n" >> $LOGFILE
 
         openssl req -new \
             -config "${ssl_dir}/openssl.cnf" \
             -out "${ssl_dir}/certs/yunohost_csr.pem" \
             -keyout "${ssl_dir}/certs/yunohost_key.pem" \
-            -nodes -batch &>>$LOGFILE
+            -nodes -batch &>> $LOGFILE
 
         openssl ca \
             -config "${ssl_dir}/openssl.cnf" \
             -days 730 \
             -in "${ssl_dir}/certs/yunohost_csr.pem" \
             -out "${ssl_dir}/certs/yunohost_crt.pem" \
-            -batch &>>$LOGFILE
+            -batch &>> $LOGFILE
 
         chmod 640 "${ssl_dir}/certs/yunohost_key.pem"
         chmod 640 "${ssl_dir}/certs/yunohost_crt.pem"
@@ -104,10 +104,9 @@ do_post_regen() {
 
     current_local_ca_domain=$(openssl x509 -in $ynh_ca -text | tr ',' '\n' | grep Issuer | awk '{print $4}')
     main_domain=$(cat /etc/yunohost/current_host)
-   
+
     # Automigrate legacy folder
-    if [ -e /usr/share/yunohost/yunohost-config/ssl/yunoCA ]
-    then
+    if [ -e /usr/share/yunohost/yunohost-config/ssl/yunoCA ]; then
         mv /usr/share/yunohost/yunohost-config/ssl/yunoCA/* ${ssl_dir}
         rm -rf /usr/share/yunohost/yunohost-config
         # Overwrite openssl.cnf because it may still contain references to the old yunoCA dir
@@ -120,7 +119,7 @@ do_post_regen() {
     chown root:root ${ssl_dir}
     chmod 750 ${ssl_dir}
     chmod -R o-rwx ${ssl_dir}
-    chmod o+x ${ssl_dir}/certs 
+    chmod o+x ${ssl_dir}/certs
     chmod o+r ${ssl_dir}/certs/yunohost_crt.pem
 
     if [[ "$current_local_ca_domain" != "$main_domain" ]]; then
diff --git a/hooks/conf_regen/03-ssh b/hooks/conf_regen/03-ssh
index d0351b4e5..0206bc157 100755
--- a/hooks/conf_regen/03-ssh
+++ b/hooks/conf_regen/03-ssh
@@ -12,7 +12,7 @@ do_pre_regen() {
     # do not listen to IPv6 if unavailable
     [[ -f /proc/net/if_inet6 ]] && ipv6_enabled=true || ipv6_enabled=false
 
-    ssh_keys=$(ls /etc/ssh/ssh_host_{ed25519,rsa,ecdsa}_key 2>/dev/null || true)
+    ssh_keys=$(ls /etc/ssh/ssh_host_{ed25519,rsa,ecdsa}_key 2> /dev/null || true)
 
     # Support different strategy for security configurations
     export compatibility="$(yunohost settings get 'security.ssh.ssh_compatibility')"
diff --git a/hooks/conf_regen/06-slapd b/hooks/conf_regen/06-slapd
index 9ba61863b..82c6f515c 100755
--- a/hooks/conf_regen/06-slapd
+++ b/hooks/conf_regen/06-slapd
@@ -20,7 +20,7 @@ do_init_regen() {
     rm -rf /var/backups/*.ldapdb
     rm -rf /var/backups/slapd-*
 
-    debconf-set-selections <<EOF
+    debconf-set-selections << EOF
 slapd slapd/password1 password yunohost
 slapd slapd/password2 password yunohost
 slapd slapd/domain string yunohost.org
@@ -87,13 +87,13 @@ do_pre_regen() {
     rm -f "$tmp_backup_dir_file"
 
     # Define if we need to migrate from hdb to mdb
-    curr_backend=$(grep '^database' /etc/ldap/slapd.conf 2>/dev/null | awk '{print $2}')
+    curr_backend=$(grep '^database' /etc/ldap/slapd.conf 2> /dev/null | awk '{print $2}')
     if [ -e /etc/ldap/slapd.conf ] && [ -n "$curr_backend" ] \
         && [ $curr_backend != 'mdb' ]; then
         backup_dir="/var/backups/dc=yunohost,dc=org-${curr_backend}-$(date +%s)"
         mkdir -p "$backup_dir"
         slapcat -b dc=yunohost,dc=org -l "${backup_dir}/dc=yunohost-dc=org.ldif"
-        echo "$backup_dir" >"$tmp_backup_dir_file"
+        echo "$backup_dir" > "$tmp_backup_dir_file"
     fi
 
     # create needed directories
@@ -155,7 +155,7 @@ objectClass: top"
     _regenerate_slapd_conf
 
     # If there's a backup, re-import its data
-    backup_dir=$(cat "$tmp_backup_dir_file" 2>/dev/null || true)
+    backup_dir=$(cat "$tmp_backup_dir_file" 2> /dev/null || true)
     if [[ -n "$backup_dir" && -f "${backup_dir}/dc=yunohost-dc=org.ldif" ]]; then
         # regenerate LDAP config directory and import database as root
         echo "Import the database using slapadd"
diff --git a/hooks/conf_regen/10-apt b/hooks/conf_regen/10-apt
index 81fa5dd25..8fb85afd5 100755
--- a/hooks/conf_regen/10-apt
+++ b/hooks/conf_regen/10-apt
@@ -17,14 +17,14 @@ do_pre_regen() {
     echo "
 Package: php-common
 Pin: origin \"packages.sury.org\"
-Pin-Priority: 500" >>"${pending_dir}/etc/apt/preferences.d/extra_php_version"
+Pin-Priority: 500" >> "${pending_dir}/etc/apt/preferences.d/extra_php_version"
 
     packages_to_refuse_from_sury="php php-* openssl libssl1.1 libssl-dev"
     for package in $packages_to_refuse_from_sury; do
         echo "
 Package: $package
 Pin: origin \"packages.sury.org\" 
-Pin-Priority: -1" >>"${pending_dir}/etc/apt/preferences.d/extra_php_version"
+Pin-Priority: -1" >> "${pending_dir}/etc/apt/preferences.d/extra_php_version"
     done
 
     echo "
@@ -54,8 +54,7 @@ Pin-Priority: -1
 Package: bind9
 Pin: release *
 Pin-Priority: -1
-" >>"${pending_dir}/etc/apt/preferences.d/ban_packages"
-
+" >> "${pending_dir}/etc/apt/preferences.d/ban_packages"
 
 }
 
@@ -63,19 +62,17 @@ do_post_regen() {
     regen_conf_files=$1
 
     # Purge expired keys (such as sury 95BD4743)
-    EXPIRED_KEYS="$(LC_ALL='en_US.UTF-8' apt-key list 2>/dev/null | grep -A1 'expired:' | grep -v 'expired\|^-' | sed 's/\s//g')"
-    for KEY in $EXPIRED_KEYS; do apt-key del $KEY 2>/dev/null; done
+    EXPIRED_KEYS="$(LC_ALL='en_US.UTF-8' apt-key list 2> /dev/null | grep -A1 'expired:' | grep -v 'expired\|^-' | sed 's/\s//g')"
+    for KEY in $EXPIRED_KEYS; do apt-key del $KEY 2> /dev/null; done
 
     # Add sury key
     # We do this only at the post regen and if the key doesn't already exists, because we don't want the regenconf to fuck everything up if the regenconf runs while the network is down
-    if [[ ! -s /etc/apt/trusted.gpg.d/extra_php_version.gpg ]]
-    then
-        wget --timeout 900 --quiet "https://packages.sury.org/php/apt.gpg" --output-document=- | gpg --dearmor >"/etc/apt/trusted.gpg.d/extra_php_version.gpg"
+    if [[ ! -s /etc/apt/trusted.gpg.d/extra_php_version.gpg ]]; then
+        wget --timeout 900 --quiet "https://packages.sury.org/php/apt.gpg" --output-document=- | gpg --dearmor > "/etc/apt/trusted.gpg.d/extra_php_version.gpg"
     fi
 
     # Make sure php7.4 is the default version when using php in cli
-    if test -e /usr/bin/php$YNH_DEFAULT_PHP_VERSION
-    then
+    if test -e /usr/bin/php$YNH_DEFAULT_PHP_VERSION; then
         update-alternatives --set php /usr/bin/php$YNH_DEFAULT_PHP_VERSION
     fi
 }
diff --git a/hooks/conf_regen/12-metronome b/hooks/conf_regen/12-metronome
index b039ace31..7ccae110c 100755
--- a/hooks/conf_regen/12-metronome
+++ b/hooks/conf_regen/12-metronome
@@ -2,8 +2,7 @@
 
 set -e
 
-if ! dpkg --list | grep -q 'ii *metronome '
-then
+if ! dpkg --list | grep -q 'ii *metronome '; then
     echo 'metronome is not installed, skipping'
     exit 0
 fi
@@ -24,7 +23,7 @@ do_pre_regen() {
     # install main conf file
     cat metronome.cfg.lua \
         | sed "s/{{ main_domain }}/${main_domain}/g" \
-            >"${metronome_dir}/metronome.cfg.lua"
+            > "${metronome_dir}/metronome.cfg.lua"
 
     # Trick such that old conf files are flagged as to remove
     for domain in $YNH_DOMAINS; do
@@ -36,7 +35,7 @@ do_pre_regen() {
     for domain in $domain_list; do
         cat domain.tpl.cfg.lua \
             | sed "s/{{ domain }}/${domain}/g" \
-                >"${metronome_conf_dir}/${domain}.cfg.lua"
+                > "${metronome_conf_dir}/${domain}.cfg.lua"
     done
 
     # remove old domain conf files
@@ -74,16 +73,13 @@ do_post_regen() {
     chown -R metronome: /var/lib/metronome/
     chown -R metronome: /etc/metronome/conf.d/
 
-    if [[ -z "$(ls /etc/metronome/conf.d/*.cfg.lua 2>/dev/null)" ]]
-    then
-        if systemctl is-enabled metronome &>/dev/null
-        then
-            systemctl disable metronome --now 2>/dev/null
+    if [[ -z "$(ls /etc/metronome/conf.d/*.cfg.lua 2> /dev/null)" ]]; then
+        if systemctl is-enabled metronome &> /dev/null; then
+            systemctl disable metronome --now 2> /dev/null
         fi
     else
-        if ! systemctl is-enabled metronome &>/dev/null
-        then
-            systemctl enable metronome --now 2>/dev/null
+        if ! systemctl is-enabled metronome &> /dev/null; then
+            systemctl enable metronome --now 2> /dev/null
             sleep 3
         fi
 
diff --git a/hooks/conf_regen/15-nginx b/hooks/conf_regen/15-nginx
index 9eabcd8b7..0e6a367f8 100755
--- a/hooks/conf_regen/15-nginx
+++ b/hooks/conf_regen/15-nginx
@@ -32,7 +32,7 @@ do_init_regen() {
     cp "redirect_to_admin.conf" $nginx_conf_dir/default.d/
 
     # Restart nginx if conf looks good, otherwise display error and exit unhappy
-    nginx -t 2>/dev/null || {
+    nginx -t 2> /dev/null || {
         nginx -t
         exit 1
     }
@@ -58,7 +58,7 @@ do_pre_regen() {
     # remove the panel overlay if this is specified in settings
     panel_overlay=$(yunohost settings get 'misc.portal.ssowat_panel_overlay_enabled' | int_to_bool)
     if [ "$panel_overlay" == "False" ]; then
-        echo "#" >"${nginx_conf_dir}/yunohost_panel.conf.inc"
+        echo "#" > "${nginx_conf_dir}/yunohost_panel.conf.inc"
     fi
 
     # retrieve variables
@@ -86,22 +86,19 @@ do_pre_regen() {
         export domain_cert_ca=$(echo $cert_status \
             | jq ".certificates.\"$domain\".CA_type" \
             | tr -d '"')
-        if echo "$xmpp_domain_list" | grep -q "^$domain$"
-        then
+        if echo "$xmpp_domain_list" | grep -q "^$domain$"; then
             export xmpp_enabled="True"
         else
             export xmpp_enabled="False"
         fi
-        if echo "$mail_domain_list" | grep -q "^$domain$"
-        then
+        if echo "$mail_domain_list" | grep -q "^$domain$"; then
             export mail_enabled="True"
         else
             export mail_enabled="False"
         fi
 
         ynh_render_template "server.tpl.conf" "${nginx_conf_dir}/${domain}.conf"
-        if [ $mail_enabled == "True" ]
-        then
+        if [ $mail_enabled == "True" ]; then
             ynh_render_template "autoconfig.tpl.xml" "${mail_autoconfig_dir}/config-v1.1.xml"
         fi
 
@@ -129,7 +126,7 @@ do_pre_regen() {
     done
 
     # remove old mail-autoconfig files
-    autoconfig_files=$(ls -1 /var/www/.well-known/*/autoconfig/mail/config-v1.1.xml 2>/dev/null || true)
+    autoconfig_files=$(ls -1 /var/www/.well-known/*/autoconfig/mail/config-v1.1.xml 2> /dev/null || true)
     for file in $autoconfig_files; do
         domain=$(basename $(readlink -f $(dirname $file)/../..))
         [[ $YNH_DOMAINS =~ $domain ]] \
@@ -144,8 +141,7 @@ do_pre_regen() {
 do_post_regen() {
     regen_conf_files=$1
 
-    if ls -l /etc/nginx/conf.d/*.d/*.conf
-    then
+    if ls -l /etc/nginx/conf.d/*.d/*.conf; then
         chown root:root /etc/nginx/conf.d/*.d/*.conf
         chmod 644 /etc/nginx/conf.d/*.d/*.conf
     fi
@@ -158,7 +154,7 @@ do_post_regen() {
     done
 
     # Reload nginx if conf looks good, otherwise display error and exit unhappy
-    nginx -t 2>/dev/null || {
+    nginx -t 2> /dev/null || {
         nginx -t
         exit 1
     }
diff --git a/hooks/conf_regen/19-postfix b/hooks/conf_regen/19-postfix
index 2e829055a..b849348cd 100755
--- a/hooks/conf_regen/19-postfix
+++ b/hooks/conf_regen/19-postfix
@@ -43,7 +43,7 @@ do_pre_regen() {
         chown postfix ${pending_dir}/etc/postfix
         chown postfix ${pending_dir}/etc/postfix/sasl_passwd
 
-        cat <<<"[${relay_host}]:${relay_port} ${relay_user}:${relay_password}" >${postfix_dir}/sasl_passwd
+        cat <<< "[${relay_host}]:${relay_port} ${relay_user}:${relay_password}" > ${postfix_dir}/sasl_passwd
     fi
 
     # Use this postfix server as a backup MX
@@ -51,10 +51,8 @@ do_pre_regen() {
     export backup_mx_emails="$(yunohost settings get 'email.smtp.smtp_backup_mx_emails_whitelisted' | sed "s/,/ /g")"
     rm -f ${postfix_dir}/relay_recipients
     touch ${postfix_dir}/relay_recipients
-    if [ -n "${backup_mx_domains}" ] && [ -n "${backup_mx_emails}" ]
-    then
-        for mail in ${backup_mx_emails}
-        do
+    if [ -n "${backup_mx_domains}" ] && [ -n "${backup_mx_emails}" ]; then
+        for mail in ${backup_mx_emails}; do
             echo "$mail OK" >> ${postfix_dir}/relay_recipients
         done
         postmap ${postfix_dir}/relay_recipients
@@ -68,7 +66,7 @@ do_pre_regen() {
     cat postsrsd \
         | sed "s/{{ main_domain }}/${main_domain}/g" \
         | sed "s/{{ domain_list }}/${domain_list}/g" \
-            >"${default_dir}/postsrsd"
+            > "${default_dir}/postsrsd"
 
     # adapt it for IPv4-only hosts
     ipv6="$(yunohost settings get 'email.smtp.smtp_allow_ipv6' | int_to_bool)"
diff --git a/hooks/conf_regen/25-dovecot b/hooks/conf_regen/25-dovecot
index 54b4e5d37..1c582a14e 100755
--- a/hooks/conf_regen/25-dovecot
+++ b/hooks/conf_regen/25-dovecot
@@ -41,7 +41,7 @@ do_post_regen() {
     mkdir -p "/etc/dovecot/yunohost.d/post-ext.d"
 
     # create vmail user
-    id vmail >/dev/null 2>&1 \
+    id vmail > /dev/null 2>&1 \
         || adduser --system --ingroup mail --uid 500 vmail --home /var/vmail --no-create-home
 
     # Delete legacy home for vmail that existed in the past but was empty, poluting /home/
diff --git a/hooks/conf_regen/34-mysql b/hooks/conf_regen/34-mysql
index 9ef8efe21..45456e63d 100755
--- a/hooks/conf_regen/34-mysql
+++ b/hooks/conf_regen/34-mysql
@@ -3,8 +3,7 @@
 set -e
 . /usr/share/yunohost/helpers
 
-if ! dpkg --list | grep -q 'ii *mariadb-server '
-then
+if ! dpkg --list | grep -q 'ii *mariadb-server '; then
     echo 'mysql/mariadb is not installed, skipping'
     exit 0
 fi
diff --git a/hooks/conf_regen/35-postgresql b/hooks/conf_regen/35-postgresql
index 3a3843d69..3acc4bb44 100755
--- a/hooks/conf_regen/35-postgresql
+++ b/hooks/conf_regen/35-postgresql
@@ -3,42 +3,42 @@
 set -e
 . /usr/share/yunohost/helpers
 
-if ! dpkg --list | grep -q "ii *postgresql-$PSQL_VERSION "
-then
+if ! dpkg --list | grep -q "ii *postgresql-$PSQL_VERSION "; then
     echo 'postgresql is not installed, skipping'
     exit 0
 fi
 
-if [ ! -e "/etc/postgresql/$PSQL_VERSION" ]
-then
+if [ ! -e "/etc/postgresql/$PSQL_VERSION" ]; then
     ynh_die --message="It looks like postgresql was not properly configured ? /etc/postgresql/$PSQL_VERSION is missing ... Could be due to a locale issue, c.f.https://serverfault.com/questions/426989/postgresql-etc-postgresql-doesnt-exist"
 fi
 
-
 do_pre_regen() {
     return 0
 }
 
 do_post_regen() {
     #regen_conf_files=$1
-  
+
     # Make sure postgresql is started and enabled
     # (N.B. : to check the active state, we check the cluster state because
     # postgresql could be flagged as active even though the cluster is in
     # failed state because of how the service is configured..)
     systemctl is-active postgresql@$PSQL_VERSION-main -q || ynh_systemd_action --service_name=postgresql --action=restart
     systemctl is-enabled postgresql -q || systemctl enable postgresql --quiet
-  
+
     # If this is the very first time, we define the root password
     # and configure a few things
     if [ ! -f "$PSQL_ROOT_PWD_FILE" ] || [ -z "$(cat $PSQL_ROOT_PWD_FILE)" ]; then
-        ynh_string_random >$PSQL_ROOT_PWD_FILE
+        ynh_string_random > $PSQL_ROOT_PWD_FILE
     fi
 
-    [ ! -e $PSQL_ROOT_PWD_FILE ] || { chown root:postgres $PSQL_ROOT_PWD_FILE; chmod 440 $PSQL_ROOT_PWD_FILE; }
-    
+    [ ! -e $PSQL_ROOT_PWD_FILE ] || {
+        chown root:postgres $PSQL_ROOT_PWD_FILE
+        chmod 440 $PSQL_ROOT_PWD_FILE
+    }
+
     sudo --login --user=postgres psql -c"ALTER user postgres WITH PASSWORD '$(cat $PSQL_ROOT_PWD_FILE)'" postgres
-  
+
     # force all user to connect to local databases using hashed passwords
     # https://www.postgresql.org/docs/current/static/auth-pg-hba-conf.html#EXAMPLE-PG-HBA.CONF
     # Note: we can't use peer since YunoHost create users with nologin
diff --git a/hooks/conf_regen/37-mdns b/hooks/conf_regen/37-mdns
index bd813e588..6fc248ac2 100755
--- a/hooks/conf_regen/37-mdns
+++ b/hooks/conf_regen/37-mdns
@@ -5,8 +5,7 @@ set -e
 _generate_config() {
     echo "domains:"
     # Add yunohost.local (only if yunohost.local ain't already in ynh_domains)
-    if ! echo "$YNH_DOMAINS"  | tr ' ' '\n' | grep -q --line-regexp 'yunohost.local'
-    then
+    if ! echo "$YNH_DOMAINS" | tr ' ' '\n' | grep -q --line-regexp 'yunohost.local'; then
         echo "    - yunohost.local"
     fi
     for domain in $YNH_DOMAINS; do
@@ -15,10 +14,8 @@ _generate_config() {
         [[ "$domain" =~ ^[^.]+\.local$ ]] || continue
         echo "    - $domain"
     done
-    if [[ -e /etc/yunohost/mdns.aliases ]]
-    then
-        for localalias in $(cat /etc/yunohost/mdns.aliases | grep -v "^ *$")
-        do
+    if [[ -e /etc/yunohost/mdns.aliases ]]; then
+        for localalias in $(cat /etc/yunohost/mdns.aliases | grep -v "^ *$"); do
             echo "    - $localalias.local"
         done
     fi
@@ -37,10 +34,10 @@ do_pre_regen() {
     mkdir -p ${pending_dir}/etc/systemd/system/
     cp yunomdns.service ${pending_dir}/etc/systemd/system/
 
-    getent passwd mdns &>/dev/null || useradd --no-create-home --shell /usr/sbin/nologin --system --user-group mdns
+    getent passwd mdns &> /dev/null || useradd --no-create-home --shell /usr/sbin/nologin --system --user-group mdns
 
     mkdir -p ${pending_dir}/etc/yunohost
-    _generate_config >${pending_dir}/etc/yunohost/mdns.yml
+    _generate_config > ${pending_dir}/etc/yunohost/mdns.yml
 }
 
 do_post_regen() {
diff --git a/hooks/conf_regen/43-dnsmasq b/hooks/conf_regen/43-dnsmasq
index 90e3ed2d7..c53a7ef6f 100755
--- a/hooks/conf_regen/43-dnsmasq
+++ b/hooks/conf_regen/43-dnsmasq
@@ -18,12 +18,12 @@ do_pre_regen() {
     cp plain/etcdefault ${pending_dir}/etc/default/dnsmasq
 
     # add resolver file
-    cat plain/resolv.dnsmasq.conf | grep "^nameserver" | shuf >${pending_dir}/etc/resolv.dnsmasq.conf
+    cat plain/resolv.dnsmasq.conf | grep "^nameserver" | shuf > ${pending_dir}/etc/resolv.dnsmasq.conf
 
     # retrieve variables
-    ipv4=$(curl --max-time 10 -s -4 https://ip.yunohost.org 2>/dev/null || true)
+    ipv4=$(curl --max-time 10 -s -4 https://ip.yunohost.org 2> /dev/null || true)
     ynh_validate_ip4 "$ipv4" || ipv4='127.0.0.1'
-    ipv6=$(curl --max-time 10 -s -6 https://ip6.yunohost.org 2>/dev/null || true)
+    ipv6=$(curl --max-time 10 -s -6 https://ip6.yunohost.org 2> /dev/null || true)
     ynh_validate_ip6 "$ipv6" || ipv6=''
     interfaces="$(ip -j addr show | jq -r '[.[].ifname]|join(" ")')"
     wireless_interfaces="lo"
@@ -51,8 +51,7 @@ do_pre_regen() {
     conf_files=$(ls -1 /etc/dnsmasq.d \
         | awk '/^[^\.]+\.[^\.]+.*$/ { print $1 }')
     for domain in $conf_files; do
-        if [[ ! $YNH_DOMAINS =~ $domain ]] && [[ ! $domain =~ \.local$ ]]
-        then
+        if [[ ! $YNH_DOMAINS =~ $domain ]] && [[ ! $domain =~ \.local$ ]]; then
             touch "${dnsmasq_dir}/${domain}"
         fi
     done
@@ -68,27 +67,27 @@ do_post_regen() {
     # Fuck it, those domain/search entries from dhclient are usually annoying
     # lying shit from the ISP trying to MiTM
     if grep -q -E "^ *(domain|search)" /run/resolvconf/resolv.conf; then
-        if grep -q -E "^ *(domain|search)" /run/resolvconf/interface/*.dhclient 2>/dev/null; then
+        if grep -q -E "^ *(domain|search)" /run/resolvconf/interface/*.dhclient 2> /dev/null; then
             sed -E "s/^(domain|search)/#\1/g" -i /run/resolvconf/interface/*.dhclient
         fi
 
-        grep -q '^supersede domain-name "";' /etc/dhcp/dhclient.conf 2>/dev/null || echo 'supersede domain-name "";' >>/etc/dhcp/dhclient.conf
-        grep -q '^supersede domain-search "";' /etc/dhcp/dhclient.conf 2>/dev/null || echo 'supersede domain-search "";' >>/etc/dhcp/dhclient.conf
-        grep -q '^supersede search "";' /etc/dhcp/dhclient.conf 2>/dev/null || echo 'supersede search "";' >>/etc/dhcp/dhclient.conf
+        grep -q '^supersede domain-name "";' /etc/dhcp/dhclient.conf 2> /dev/null || echo 'supersede domain-name "";' >> /etc/dhcp/dhclient.conf
+        grep -q '^supersede domain-search "";' /etc/dhcp/dhclient.conf 2> /dev/null || echo 'supersede domain-search "";' >> /etc/dhcp/dhclient.conf
+        grep -q '^supersede search "";' /etc/dhcp/dhclient.conf 2> /dev/null || echo 'supersede search "";' >> /etc/dhcp/dhclient.conf
         systemctl restart resolvconf
     fi
 
     # Some stupid things like rabbitmq-server used by onlyoffice won't work if
     # the *short* hostname doesn't exists in /etc/hosts -_-
     short_hostname=$(hostname -s)
-    grep -q "127.0.0.1.*$short_hostname" /etc/hosts || echo -e "\n127.0.0.1\t$short_hostname" >>/etc/hosts
+    grep -q "127.0.0.1.*$short_hostname" /etc/hosts || echo -e "\n127.0.0.1\t$short_hostname" >> /etc/hosts
 
     [[ -n "$regen_conf_files" ]] || return 0
 
     # Remove / disable services likely to conflict with dnsmasq
     for SERVICE in systemd-resolved bind9; do
-        systemctl is-enabled $SERVICE &>/dev/null && systemctl disable $SERVICE 2>/dev/null
-        systemctl is-active $SERVICE &>/dev/null && systemctl stop $SERVICE
+        systemctl is-enabled $SERVICE &> /dev/null && systemctl disable $SERVICE 2> /dev/null
+        systemctl is-active $SERVICE &> /dev/null && systemctl stop $SERVICE
     done
 
     systemctl restart dnsmasq
diff --git a/hooks/conf_regen/52-fail2ban b/hooks/conf_regen/52-fail2ban
index db3cf0da7..baa0bc28f 100755
--- a/hooks/conf_regen/52-fail2ban
+++ b/hooks/conf_regen/52-fail2ban
@@ -24,8 +24,7 @@ do_pre_regen() {
 do_post_regen() {
     regen_conf_files=$1
 
-    if ls -l /etc/fail2ban/jail.d/*.conf
-    then
+    if ls -l /etc/fail2ban/jail.d/*.conf; then
         chown root:root /etc/fail2ban/jail.d/*.conf
         chmod 644 /etc/fail2ban/jail.d/*.conf
     fi