Default user groups

[Chris Smart]

On Sun, Feb 6, 2011 at 11:35 AM, Aaron Konstam <akonstam at sbcglobal.net> wrote:
> When you use the user add gui it puts that user into a group with his
> username as the group name. Then you can use chgrp to put that user into
> any group you want to.

Sure, but I'm after a way to specify what groups a user should be
added to by default, when a new user is created (in the same way that
by default, a new user is added to their own group).

For example, /etc/default/useradd specifies what GROUP, SHELL, HOME,
etc a new user should have, but it doesn't seem to have any option for
what secondary GROUPS the user should have.

It would be great to be able to change the default behaviour, so that
users are added to specific groups by default, without the need to
manually apply this post useradd. This way all default Fedora scripts
and tools which use the useradd command should just work..
theoretically ;-)

There's also /etc/login.defs, but I can't see any option for
specifying default groups there either..

-c