**NB**, cela est différent de la [documentation](https://docs.nextcloud.com/server/latest/admin_manual/configuration_user/user_configuration.html#renaming-a-user).
- Récupérer l'UUID
```
# su - postgres
$ psql -t -q -A -d nextcloud -c "SELECT owncloud_name FROM oc_ldap_user_mapping WHERE ldap_dn LIKE '%prenom.nom%';"
# su -l -c "psql -t -q -A -d ${DBNAME} -c \"SELECT owncloud_name FROM oc_ldap_user_mapping WHERE ldap_dn LIKE '%prenom.nom%';\"" postgres
