User groups

[Deron Meranda]

On Fri, 18 Feb 2005 14:32:35 -0500, Jan Morales <jan at geezjan.org> wrote:
> I started using Unix a long time ago, before the practice of having one
> group per user emerged. You used to have one group, e.g. "users", that
> all users were members of and everyone's umask was 022. Now user "joe"
> is a member of group "joe" and his umask is 02. Can someone point me to
> a reference for the rationale for this scheme? I don't really understand
> it yet. Thanks!

This is a Red Hat convention, called User Private Groups (UPG), for which
they modified the shadow-utils package (which includes the useradd command).

The discussion about this feature is here:
http://www.redhat.com/docs/manuals/linux/RHL-7.2-Manual/ref-guide/s1-users-groups-private-groups.html

-- 
Deron Meranda