use ynh_secure_remove and ynh_replace_string

scripts/install

@@ -89,7 +89,7 @@ init_composer "www-data" "$final_path"
 -u "www-data" php "$final_path/admin/migration.php"
 
 # Modify PHP-FPM pool configuration and copy it to the pool directory
-sed -i "s@NAMETOCHANGE@$app@g" ../conf/php-fpm.conf
+ynh_replace_string "NAMETOCHANGE" "$app" ../conf/php-fpm.conf
 finalphpconf=/etc/php5/fpm/pool.d/$app.conf
 cp ../conf/php-fpm.conf $finalphpconf
 chown root: $finalphpconf
@@ -107,9 +107,9 @@ ynh_package_install php-fpdf
 yunohost app addaccess $app -u $admin
 
 # Modify Nginx configuration file and copy it to Nginx conf directory
-sed -i "s@PATHTOCHANGE@$path@g" ../conf/nginx.conf
-sed -i "s@ALIASTOCHANGE@$final_path/@g" ../conf/nginx.conf
-sed -i "s@YNH_APP_INSTANCE_NAME@$app@g" ../conf/nginx.conf
+ynh_replace_string "PATHTOCHANGE" "$path" ../conf/nginx.conf
+ynh_replace_string "ALIASTOCHANGE" "$final_path" ../conf/nginx.conf
+ynh_replace_string "YNH_APP_INSTANCE_NAME" "$app" ../conf/nginx.conf
 cp ../conf/nginx.conf /etc/nginx/conf.d/$domain.d/$app.conf
 # Reload Nginx and regenerate SSOwat conf
 service nginx reload

scripts/remove

@@ -19,14 +19,13 @@ app=$YNH_APP_INSTANCE_NAME
 domain=$(ynh_app_setting_get "$app" domain)
 
 # Remove sources
-rm -rf /var/www/$app
+ynh_secure_remove "/var/www/$app"
 
 # Remove configuration files
-rm -f /etc/nginx/conf.d/$domain.d/$app.conf
+ynh_secure_remove /etc/nginx/conf.d/$domain.d/$app.conf
 
-rm -f /etc/php5/fpm/pool.d/$app.conf
-rm -f /etc/php5/fpm/conf.d/20-$app.ini
-service php5-fpm reload
+ynh_secure_remove /etc/php5/fpm/pool.d/$app.conf
+ynh_secure_remove /etc/php5/fpm/conf.d/20-$app.ini
 
 # Drop MySQL database and user
 dbname=$app
@@ -35,3 +34,4 @@ ynh_mysql_drop_db "$dbname" || true
 ynh_mysql_drop_user "$dbuser" || true
 
 service nginx reload
+service php5-fpm reload

scripts/upgrade

@@ -63,9 +63,6 @@ dbuser=$app
 ### Execute potential SQL statements here
 # Copy files to the right place
 final_path=/var/www/$app
-cp $final_path/admin/logs_studs.txt ../conf/
-rm -Rf $final_path
-mkdir -p $final_path
 
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE