getting rid of excess groups

[Colin Law]

On 12 May 2013 13:35, John R. Sowden <jsowden at americansentry.net> wrote:
> I seem to have groups for staff, me, another user, and others above and
> below 1000.  I would like to get rid of the ones not used, but I need to
> know if they are used.  How do I do this?
> Not only are they used by a program, but also are there files owned by those
> groups?

You can find files owned by groups easily enough [1] (google found
that for me) but I don't know of any way to find which groups are used
by software.  I suspect it is not possible.

Colin


[1] http://www.cyberciti.biz/faq/how-do-i-find-all-the-files-owned-by-a-particular-user-or-group/