diff --git a/data/hooks/backup/05-conf_ldap b/data/hooks/backup/05-conf_ldap
index 1e405e69..a0c7b8c0 100644
--- a/data/hooks/backup/05-conf_ldap
+++ b/data/hooks/backup/05-conf_ldap
@@ -1,5 +1,5 @@
 backup_dir="$1/conf/ldap"
-mkdir -p $backup_dir
+sudo mkdir -p $backup_dir
 
 # Fix for first jessie yunohost where slapd.conf is called slapd-yuno.conf
 # without slapcat doesn't work
@@ -11,5 +11,5 @@ fi
 sudo cp -a /etc/ldap/slapd.conf $backup_dir/
 
 sudo slapcat -l $backup_dir/slapcat.ldif.raw
-egrep -v "^entryCSN:" < $backup_dir/slapcat.ldif.raw > $backup_dir/slapcat.ldif
-rm -f $backup_dir/slapcat.ldif.raw
+sudo bash -c "egrep -v '^entryCSN:' < $backup_dir/slapcat.ldif.raw > $backup_dir/slapcat.ldif"
+sudo rm -f $backup_dir/slapcat.ldif.raw
diff --git a/data/hooks/backup/08-conf_ssh b/data/hooks/backup/08-conf_ssh
index f17ce48e..693dd8cf 100644
--- a/data/hooks/backup/08-conf_ssh
+++ b/data/hooks/backup/08-conf_ssh
@@ -1,4 +1,8 @@
 backup_dir="$1/conf/ssh"
-mkdir -p $backup_dir
+sudo mkdir -p $backup_dir
 
-sudo cp -a /etc/ssh/. $backup_dir
+if [ -d /etc/ssh/ ]; then
+    sudo cp -a /etc/ssh/. $backup_dir
+else
+    echo "SSH is not installed"
+fi
diff --git a/data/hooks/backup/11-conf_ynh_mysql b/data/hooks/backup/11-conf_ynh_mysql
index e0cdc59a..5789901f 100644
--- a/data/hooks/backup/11-conf_ynh_mysql
+++ b/data/hooks/backup/11-conf_ynh_mysql
@@ -1,4 +1,4 @@
 backup_dir="$1/conf/ynh/mysql"
-mkdir -p $backup_dir
+sudo mkdir -p $backup_dir
 
 sudo cp -a /etc/yunohost/mysql $backup_dir/
diff --git a/data/hooks/backup/14-conf_ssowat b/data/hooks/backup/14-conf_ssowat
index bae11546..3b23c264 100644
--- a/data/hooks/backup/14-conf_ssowat
+++ b/data/hooks/backup/14-conf_ssowat
@@ -1,4 +1,4 @@
 backup_dir="$1/conf/ssowat"
-mkdir -p $backup_dir
+sudo mkdir -p $backup_dir
 
 sudo cp -a /etc/ssowat/. $backup_dir
diff --git a/data/hooks/backup/17-data_home b/data/hooks/backup/17-data_home
index acc999a8..d6faa893 100644
--- a/data/hooks/backup/17-data_home
+++ b/data/hooks/backup/17-data_home
@@ -1,5 +1,5 @@
 backup_dir="$1/data/home"
-mkdir -p $backup_dir
+sudo mkdir -p $backup_dir
 
 . /usr/share/yunohost/apps/helpers
 
diff --git a/data/hooks/backup/20-conf_ynh_firewall b/data/hooks/backup/20-conf_ynh_firewall
index cb0a8493..f478e0fd 100644
--- a/data/hooks/backup/20-conf_ynh_firewall
+++ b/data/hooks/backup/20-conf_ynh_firewall
@@ -1,4 +1,4 @@
 backup_dir="$1/conf/ynh/firewall"
-mkdir -p $backup_dir
+sudo mkdir -p $backup_dir
 
 sudo cp -a /etc/yunohost/firewall* $backup_dir
diff --git a/data/hooks/backup/21-conf_ynh_certs b/data/hooks/backup/21-conf_ynh_certs
index 061513f9..19483ae5 100644
--- a/data/hooks/backup/21-conf_ynh_certs
+++ b/data/hooks/backup/21-conf_ynh_certs
@@ -1,4 +1,4 @@
 backup_dir="$1/conf/ynh/certs"
-mkdir -p $backup_dir
+sudo mkdir -p $backup_dir
 
 sudo cp -a /etc/yunohost/certs/. $backup_dir
diff --git a/data/hooks/backup/26-conf_xmpp b/data/hooks/backup/26-conf_xmpp
index 68461c03..f207975e 100644
--- a/data/hooks/backup/26-conf_xmpp
+++ b/data/hooks/backup/26-conf_xmpp
@@ -1,5 +1,5 @@
 backup_dir="$1/conf/xmpp"
-mkdir -p $backup_dir/{etc,var}
+sudo mkdir -p $backup_dir/{etc,var}
 
 sudo cp -a /etc/metronome/. $backup_dir/etc
 sudo cp -a /var/lib/metronome/. $backup_dir/var
diff --git a/data/hooks/backup/29-conf_nginx b/data/hooks/backup/29-conf_nginx
index caa9c9d5..19bd1b45 100644
--- a/data/hooks/backup/29-conf_nginx
+++ b/data/hooks/backup/29-conf_nginx
@@ -1,4 +1,4 @@
 backup_dir="$1/conf/nginx"
-mkdir -p $backup_dir
+sudo mkdir -p $backup_dir
 
 sudo cp -a /etc/nginx/conf.d/. $backup_dir
diff --git a/data/hooks/backup/32-conf_cron b/data/hooks/backup/32-conf_cron
index 5052d50e..efa18f34 100644
--- a/data/hooks/backup/32-conf_cron
+++ b/data/hooks/backup/32-conf_cron
@@ -1,4 +1,4 @@
 backup_dir="$1/conf/cron"
-mkdir -p $backup_dir
+sudo mkdir -p $backup_dir
 
 sudo cp -a /etc/cron.d/yunohost* $backup_dir/