RE: usermod

From: Steve Buehler (steve_at_ibapp.com)
Date: 03/30/05

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    Date: Wed, 30 Mar 2005 08:41:14 -0600
To: General Red Hat Linux discussion list <redhat-list@redhat.com>

    At 08:34 AM 3/30/2005, you wrote:
    >>-----Original Message-----
    >>From: Steve Buehler [mailto:steve@ibapp.com]
    >>Sent: Wednesday, March 30, 2005 8:21 AM
    >>To: redhat-list@redhat.com
    >>Subject: usermod
    >>
    >>
    >>I know you can use "usermod" on RedHat Linux to add a user to another group
    >>by typing:
    >>usermod -G sam,frank steve
    >>This would effectively add steve to the "frank" and "sam" group. How do
    >>you remove them from those groups without editing the /etc/group file
    >>manually? I can do:
    >>usermod -G steve steve
    >>That will remove him from "sam" and "frank" groups but would add steve to
    >>his own group so the /etc/group file would look like:
    >>steve:x:590:steve
    >>instead of just:
    >>steve:x:590:
    >>For the life of me, I can't figure this one out. Does anybody know?

    >If you "usermod -G sam,frank steve" and realize that you shouldn't have put
    >steve in the frank group, just "usermod -G sam steve" and by omission, will
    >remove the user from the group. HTH

    Yes, but what if I want to remove him from both groups. You can't type
    "usermod -G steve". Basically, I am wanting to remove him from ALL groups
    except for his initial group. And "usermod -g steve steve" will not do it
    either. The "-G" must have atleast one group as an
    option..................................I just tried something that seems
    to work, but not sure if it is suppose to work this way. I typed:
    usermod -G "" steve
    and that removed steve from all extra groups. So either my problem is
    solved, or there is another "proper" way of doing it.

    Thanks for your help
    Steve 

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