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+Application packaging
+
+### Helpers
+
+The CLI [moulinette](/moulinette) provides a few tools to make the packager's work easier:
+
+
+
+```bash
+sudo yunohost app checkport
+```
+
+This helper checks the port and returns an error if the port is already in use.
+
+
+
+
+```bash
+sudo yunohost app setting [ -v ]
+```
+
+This is the most important helper of YunoHost. It allows you to store some settings for a specific app, in order to be either reused afterward or used for YunoHost configuration (**e.g.** for the SSO).
+
+It sets the value if you append ```-v ```, and gets it otherwise.
+
+
+** Some useful settings **
+```skipped_uris```
+Remove the protection on the uris list provided separated by commas.
+
+```protected_uris```
+Protects the uris list provided separated by commas. Only logged in users will have access.
+
+There are also `skipped_regex`, `protected_regex`, `unprotected_uris`, `unprotected_regex`.
+
+**Be careful** : you must run `yunohost app ssowatconf` to apply the effect. URIs will be converted into URLs and written to the file /etc/ssowat/conf.json.
+
+Example:
+```yunohost app setting myapp unprotected_urls -v "/"```
+```yunohost app ssowatconf```
+These commands will disable the SSO on the root of the aplication like domain.tld/myapp This is useful for public application.
+
+
+
+
+```bash
+sudo yunohost app checkurl -a
+```
+
+This helper is useful for web apps and allows you to be sure that the web path is not taken by another app. If not, it "reserves" the path.
+
+**Note**: do not prepend `http://` or `https://` to the ``.
+
+
+
+
+```bash
+sudo yunohost app initdb [ -p ] [ -s ]
+```
+
+This helper creates a MySQL database. If you do not append a password, it generates one and returns it. If you append a SQL file, it initializes your database with the SQL statements inside.
+
+
+
+
+```bash
+sudo yunohost app ssowatconf
+```
+
+This helper reloads the SSO configuration. You have to call it at the end of the script when you are packaging a web app.
+
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