Re: [PLUG] Finding a /etc/group entry containing a user list

[David Coulson <david@davidcoulson.net>]

Just run 'id' against each username and parse out the output. Remember 
/etc/group is typically just for supplemental groups - The user's 
primary group is usually only in /etc/passwd.

On 11/12/11 2:27 PM, JP Vossen wrote:
> I have a list of 10 users and I'd like to see if there is an entry in 
> /etc/group that already contains all or most of them.  Unfortunately, 
> the /etc/group file is large, not well maintained, and not sorted in 
> any way at all.  If there is not a group that contains all the users, 
> I'd like a list of the groups that contain the most because I may be 
> able to just add the missing ones.
>
> I thought of chaining a bunch of greps together, but that's ugly, not 
> scalable, and won't give me a list of partial matches.
>
> I know I could write some Perl (or whatever) code to do this, but does 
> anyone have a better trick?
>
> Thanks,
> JP
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