You need the path to the file as above. Either be IN the same directory as the occ file ("~" means you’re in the user’s home directory, not the nextcloud root), or specify the full path to it.
sorry I scrapt everything it’s my fault. I click the boutton to update everything because I was missing php files. But I have 2 active user. how can I backup from linux all user data like photo, doc, pdf etc …