diff --git a/scripts/change_url b/scripts/change_url
new file mode 100644
index 0000000..2f0442f
--- /dev/null
+++ b/scripts/change_url
@@ -0,0 +1,167 @@
+#!/bin/bash
+
+#=================================================
+# GENERIC STARTING
+#=================================================
+# IMPORT GENERIC HELPERS
+#=================================================
+
+source _common.sh
+source /usr/share/yunohost/helpers
+
+#=================================================
+# RETRIEVE ARGUMENTS
+#=================================================
+
+old_domain=$YNH_APP_OLD_DOMAIN
+old_path=$YNH_APP_OLD_PATH
+
+new_domain=$YNH_APP_NEW_DOMAIN
+new_path=$YNH_APP_NEW_PATH
+
+app=$YNH_APP_INSTANCE_NAME
+
+mypads=$(ynh_app_setting_get $app mypads)
+
+#=================================================
+# CHECK THE SYNTAX OF THE PATHS
+#=================================================
+
+test -n "$old_path" || old_path="/"
+test -n "$new_path" || new_path="/"
+new_path=$(ynh_normalize_url_path $new_path)
+old_path=$(ynh_normalize_url_path $old_path)
+
+#=================================================
+# CHECK IF THE PATH CAN BE CHANGED
+#=================================================
+
+if [ "$new_path" != "/" ] && [ $mypads -eq 1 ]
+then
+	ynh_die "Mypads needs to be installed on the root of a domain or a subdomain."
+fi
+
+#=================================================
+# CHECK WHICH PARTS SHOULD BE CHANGED
+#=================================================
+
+change_domain=0
+if [ "$old_domain" != "$new_domain" ]
+then
+	change_domain=1
+fi
+
+change_path=0
+if [ "$old_path" != "$new_path" ]
+then
+	change_path=1
+fi
+
+#=================================================
+# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
+#=================================================
+
+if [ $change_domain -eq 0 ]
+then
+	# Backup the current version of the app
+	ynh_backup_before_upgrade
+	ynh_clean_setup () {
+		# Nettoyage des résidus d'installation non pris en charge par le script remove.
+		if test -n "$PID_TAIL"
+		then
+			SUPPRESS_WARNING kill -s 15 $PID_TAIL	# Arrête l'exécution de tail.
+			ynh_secure_remove "$tempfile"
+		fi
+
+		# restore it if the upgrade fails
+		ynh_restore_upgradebackup
+	}
+	# Exit if an error occurs during the execution of the script
+	ynh_abort_if_errors
+fi
+
+#=================================================
+# STANDARD MODIFICATIONS
+#=================================================
+# MODIFY URL IN NGINX CONF
+#=================================================
+
+nginx_conf_path=/etc/nginx/conf.d/$old_domain.d/$app.conf
+
+# Change the path in the nginx config file
+if [ $change_path -eq 1 ]
+then
+	# Make a backup of the original nginx config file if modified
+	ynh_backup_if_checksum_is_different "$nginx_conf_path"
+
+	# Move from sub path to root
+	if [ "$new_path" == "/" ]
+	then
+		ynh_replace_string "^location $old_path/" "location $new_path" "$nginx_conf_path"
+		ynh_replace_string "^.*rewrite.*\^/" "#sub_path_only&" "$nginx_conf_path"
+		ynh_replace_string "^location ~\* $old_path/" "location ~* $new_path" "$nginx_conf_path"
+
+		# Change the path in the two rewrite instructions
+		ynh_replace_string "\(rewrite *\^\)$old_path\$ $old_path/*" "\1$new_path$ $new_path" "$nginx_conf_path"
+		ynh_replace_string "\(rewrite *\^\)$old_path/*admin\$ $old_path/*" "\1${new_path}admin\$ $new_path" "$nginx_conf_path"
+
+	# Move to a sub path
+	else
+		ynh_replace_string "^location $old_path.*" "location $new_path/ {" "$nginx_conf_path"
+		ynh_replace_string "^#sub_path_only" "" "$nginx_conf_path"
+		ynh_replace_string "^location ~\* $old_path/*" "location ~* $new_path/" "$nginx_conf_path"
+
+		# Change the path in the two rewrite instructions
+		ynh_replace_string "\(rewrite *\^\)$old_path\$ $old_path/*" "\1$new_path$ $new_path/" "$nginx_conf_path"
+		ynh_replace_string "\(rewrite *\^\)$old_path/*admin\$ $old_path/*" "\1$new_path/admin\$ $new_path/" "$nginx_conf_path"
+	fi
+
+	# Calculate and store the nginx config file checksum
+	ynh_store_file_checksum "$nginx_conf_path"
+fi
+
+# Change the domain for nginx
+if [ $change_domain -eq 1 ]
+then
+	# Delete file checksum for the old conf file location
+	ynh_delete_file_checksum "$nginx_conf_path"
+	mv $nginx_conf_path /etc/nginx/conf.d/$new_domain.d/$app.conf
+
+	nginx_conf_path=/etc/nginx/conf.d/$new_domain.d/$app.conf
+	# Calculate and store the nginx config file checksum
+	ynh_store_file_checksum "$nginx_conf_path"
+fi
+
+#=================================================
+# RELOAD NGINX
+#=================================================
+
+systemctl reload nginx
+
+#=================================================
+# START ETHERPAD IN BACKGROUND
+#=================================================
+
+# Démarre etherpad
+WARNING echo "Redémarrage d'etherpad"
+tempfile="$(mktemp)"
+tail -f -n1 /var/log/$app/etherpad.log > "$tempfile" &	# Suit le démarrage dans le log
+PID_TAIL=$!	# Récupère le PID de la commande tail, qui est passée en arrière plan.
+systemctl start $app	# Redémarre etherpad. Le démarrage est fait le plus tôt possible, car il est très long...
+
+#=================================================
+# CHECK ETHERPAD STARTING
+#=================================================
+
+for i in `seq 1 120`
+do	# La boucle attend le démarrage d'etherpad. Ou 2 minutes. Cette boucle évite simplement un 502 au début, car le démarrage est long...
+	if grep -q "You can access your Etherpad instance at" "$tempfile"; then
+		WARNING echo "Le service $app a démarré correctement."
+		break	# Si le log annonce le démarrage d'etherpad, sort de la boucle.
+	fi
+	WARNING echo -n "."
+	sleep 1
+done
+echo ""
+QUIET kill -s 15 $PID_TAIL	# Arrête l'exécution de tail.
+ynh_secure_remove "$tempfile"