how to add an existing user to a new group?

xpucto · 04-19-2006, 07:59 AM

Hi!
Is there a special command to add an existing user to a new created group? Or is editing per hand /etc/group with vigr the only solution?

Thanks.

Xian · 04-19-2006, 08:07 AM

$ su
# gpasswd -a <username> <group>

reddazz · 04-19-2006, 08:07 AM

You can use the usermod command.

BobNutfield · 04-19-2006, 08:12 AM

Try:

[QUOTE$ usermod -g (group) (username)[/QUOTE]

I believe this should assign a group to a user or change the user from their original group.

Hope this helps

Bob

xpucto · 04-19-2006, 08:13 AM

Thanks a lot!
I just created 1 group and created 2 users with useradd -g mynewgroup usersname
but when I do cat /etc/group I only have:

Quote:

newgroup:x:513:

but the usersnames don't appear. Why?

reddazz · 04-19-2006, 08:21 AM

A users default group does not usually show up in /etc/group. Run "id username" to find out the default group and other info.

puntjuh · 04-19-2006, 08:22 AM

Doesn't usermod -g only set the initial group of the user ?

I believe the command to add a group to a user is: usermod -Gcdrom puntjuh (just an example group then username)

xpucto · 04-19-2006, 08:29 AM

Thanks a lot!

reddazz · 04-19-2006, 08:31 AM

Quote:

Originally Posted by puntjuh

Doesn't usermod -g only set the initial group of the user ?

I believe the command to add a group to a user is: usermod -Gcdrom puntjuh (just an example group then username)

You are right -g sets or changes the initial group. "-G comma,sperated,existing,groups,newgroup" keeps the user in their existing non primary groups and adds them to a new one.