Upload files still exist even when we delete all posts using it, and wasting disk space if there's too many files.I think a command line API should be given at least.

1. Bringing base dependencies up to date...

OK
2. Updating NodeBB data store schema.
5/3 11:01 [2536] - info: Beginning database schema update
5/3 11:01 [2536] - info: [2015/09/30] Converting default Gravatar image to default User Avatar skipped
5/3 11:01 [2536] - info: [2015/11/06] Gravatar removal skipped
5/3 11:01 [2536] - info: [2015/12/15] Upgrading chats
5/3 11:01 [2536] - info: [2015/12/15] Chats upgrade done!
5/3 11:01 [2536] - info: [2015/12/23] Upgrading chat room hashes
5/3 11:01 [2536] - info: [2015/12/23] Chats room hashes upgrade done!
5/3 11:01 [2536] - info: [2015/12/23] Adding theme to active plugins sorted set
5/3 11:01 [2536] - info: [2015/12/23] Adding theme to active plugins sorted set done!
5/3 11:01 [2536] - info: [2016/01/14] Creating user best post sorted sets
5/3 11:01 [2536] - info: processing pid: 5 uid: 2 votes: 2
5/3 11:01 [2536] - info: processing pid: 7 uid: 4 votes: 1
5/3 11:01 [2536] - info: processing pid: 17 uid: 2 votes: 1
5/3 11:01 [2536] - info: [2016/01/14] Creating user best post sorted sets done!
5/3 11:01 [2536] - info: [2016/01/20] Creating users:notvalidated
5/3 11:01 [2536] - info: processing uid: 1 email:confirmed: null
5/3 11:01 [2536] - info: processing uid: 2 email:confirmed: null
5/3 11:01 [2536] - info: processing uid: 3 email:confirmed: null
5/3 11:01 [2536] - info: processing uid: 4 email:confirmed: null
5/3 11:01 [2536] - info: processing uid: 5 email:confirmed: null
5/3 11:01 [2536] - info: processing uid: 6 email:confirmed: null
5/3 11:01 [2536] - info: processing uid: 7 email:confirmed: null
5/3 11:01 [2536] - info: processing uid: 8 email:confirmed: null
5/3 11:01 [2536] - info: processing uid: 9 email:confirmed: null
5/3 11:01 [2536] - info: processing uid: 10 email:confirmed: null
5/3 11:01 [2536] - info: processing uid: 11 email:confirmed: null
5/3 11:01 [2536] - info: [2016/01/20] Creating users:notvalidated done!
5/3 11:01 [2536] - info: [2016/01/23] Creating Global moderators group

It stops here. I try several times, but it never moves forward.