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Possible Duplicate:
Is there a way in Linux to update the user/group properties without having to login again?
How does one refresh the groups that a logged-in user is in without having to re-login?
moo
Posted 2010-04-24T23:31:35.883
Reputation: 897
18
possible in shell (I don't think it is for gui)
try newgrp groupname
I wrote more info on this on my blog a while back. according to that this will also change the default group of the shell. you can use sg to Switch your default Group
xenoterracide
Posted 2010-04-24T23:31:35.883
Reputation: 628
2this is essentially no different that doing su - username as ignacio pointed out. a new shell process gets loaded and layered on top of the old one. however, you are still technically correct :) – moo – 2010-04-25T13:31:05.877
3Prefix with exec (exec newgrp groupname) if you don't want to have an old shell process laying around. – user1686 – 2010-04-25T15:24:44.820
1@orlandu63 except su changes your user and the - means change your whole env too. It also can mean you have to login. newgrp doesn't.
@grawity I didn't know that. thanks for the tip. – xenoterracide – 2010-04-26T01:16:39.357
7
su - username will do it for the shell (and subproccesses) that su opens up, but for everything else you'll need to relog.
Ignacio Vazquez-Abrams
Posted 2010-04-24T23:31:35.883
Reputation: 100 516
1this answer is incorrect especially since su is re-logging in. use newgrp in an open shell session to add groups to that session, that you've been added to. – xenoterracide – 2010-04-25T01:14:41.210
1fyi. the answer marked correct is wrong... and it's still technically a relogin. I added a correct answer... I find that the answer given to this question is usually wrong. it is a common fallacy. – xenoterracide – 2010-04-25T01:49:49.750