sudo -u daemon php occ maintenance:singleuser --on (attivo la manutenzione utente singolo, nessuno sincronizza admin entr ain webgui)
sudo -u daemon php occ maintenance:singleuser --off (disattivo la manutenzione utente singolo)

sudo -u daemon php occ maintenance --on (attivo la manutenzione nessuno sincronizza e accede a webgui)
sudo -u daemon php occ maintenance --off (disattivo la manutenzione)

* will rescan all files of all known users
  sudo -u www-data php occ files:scan --all

* Query your ownCloud server status:
  sudo -u www-data php occ status

* Display your ownCloud version:
  sudo -u www-data php occ -V



File Operations

The files:scan command scans for new files and updates the file cache. You may rescan all files, per-user, a space-delimited list of users, and limit the search path:

$ sudo -u www-data php occ  files:scan --help
  Usage:
  files:scan [-p|--path="..."] [-q|--quiet] [--all] [user_id1] ... [user_idN]

Arguments:
  user_id               will rescan all files of the given user(s)

Options:
  --path (-p)           limit rescan to this path, eg.
  --path="/alice/files/Music", the user_id is determined by the path and the
  user_id parameter and --all are ignored
  --all                 will rescan all files of all known users

files:cleanup tidies up the server’s file cache by deleting all file entries that have no matching entries in the storage table.

* scan di tutti i file:
# sudo -u www-data php occ  files:scan -vv --all

# migrate user
php -u www-data php occ files:transfer-ownership <source-user> <destination-user>