diff --git a/scripts/_common.sh b/scripts/_common.sh
index 6aa5058..2ea1bc6 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -15,6 +15,19 @@ loginldap_version="2021-03-01-2"
 # PERSONAL HELPERS
 #=================================================
 
+# update directory right
+# | arg: app - The application's name ; default : yeswiki
+# | arg: final_path - The path of the application's folder
+#	yeswiki_update_dir_rights yeswiki /var/www/yeswiki
+yeswiki_update_dir_rights() {
+	local app="${1:-yeswiki}"
+	local final_path="${2}"
+  
+  chown -R $app:$app $final_path
+  chmod -R u=rwX,g=rwX,o-rwx $final_path
+  chmod -R o+rwX $final_path/{cache,files}
+}
+
 #=================================================
 # EXPERIMENTAL HELPERS
 #=================================================