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Old 11-11-2005, 09:43 AM   #1
Registered: Apr 2004
Distribution: Gentoo
Posts: 76

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how to add a user to a new group?

Hi all,

this is really a newbie question, but how do I add a user to a new group? For example, I have this user account "john" that is already part of the following groups:

users adm audio wheel

now, I need to add him into the group "video". But if I use "usermod -G", I need to retype all the existing groups. Is there an easier way to just add the new group on top of the existing one? Thanks.

-- eman
Old 11-11-2005, 09:58 AM   #2
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Registered: Oct 2003
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From the ( man usermod ), try it with -a

-G group1[ ,group2,..., [groupN]]]
A list of supplementary groups which the user is also a member of.
Each group is separated from the next by a comma, with no intervening
whitespace. The groups are subject to the same restrictions as the
group given with the -g option. If the user is currently a member of
a group which is not listed, the user will be removed from the group.
This behaviour can be changed via -a option, which appends user to
the current supplementary group list.
Old 11-11-2005, 10:42 AM   #3
Registered: Apr 2005
Location: switzerland
Distribution: debian etch
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Re: how to add a user to a new group?

first, create the video group

#addgroup video


#adduser emanresu video
Old 11-20-2005, 06:38 PM   #4
Registered: Apr 2004
Distribution: Gentoo
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the -a option doesn't seem to be available on my machine.
Old 11-20-2005, 07:35 PM   #5
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You could edit the /etc/group file. Add the user to the end of the line that begins with the the word "video".
Old 11-21-2005, 08:18 AM   #6
Registered: Apr 2004
Distribution: Gentoo
Posts: 76

Original Poster
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here is the solution:

gpasswd -a  <username> <groupname>


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