A file or folder with two owner or group.

hack3rcon · 12-04-2018, 03:16 PM

Hello.
Can I set two owner for a file or folder? How about group?

Thank you.

GazL · 12-04-2018, 03:22 PM

No, a file can only have one owner and one group, but you can allow other users/group members to access a file using ACLs.
man setfacl and man 5 acl for details.

Using them is a bit clunky however.

scasey · 12-04-2018, 03:24 PM

Quote:

Originally Posted by hack3rcon

Hello.
Can I set two owner for a file or folder? How about group?

Thank you.

I'm gonna say no.

You can, however have two users in a group and set the group permissions on a file or folder to be rw.
That would allow both users to have read-write access to the file/folder. See man chmod or enter
linux permissions
into your favorite search engine.

chrism01 · 12-04-2018, 10:56 PM

2 people in same group is the usual way - see chmod/chown/chgrp .

Turbocapitalist · 12-05-2018, 02:18 AM

Quote:

Originally Posted by chrism01

2 people in same group is the usual way - see chmod/chown/chgrp .

Plus the SetGUID bit for the group.

JeremyBoden · 12-05-2018, 07:50 AM

The setGUID isn't normally required.

Turbocapitalist · 12-05-2018, 07:53 AM

Quote:

Originally Posted by JeremyBoden

The setGUID isn't normally required.

It's needed so that new files get the right group settings, but is also affected by the general umask. Otherwise the file will end up owned by one and while maybe readable by the others not editable by them.

hack3rcon · 12-06-2018, 03:29 PM

I did "setfacl" with "-R" option but I guess user can delete some files and directories.

scasey · 12-06-2018, 03:48 PM

OK. Again.
We're answering your questions, but the answers don't seem to be solving your problem.
That would be because we don't know what you're trying to do.

Please tell us that. I'm sure we can help, but this nickle-and-dime dialog is both tedious and non-productive.