[CentOS] Slightly OT: check creation of a group

Mon Mar 1 16:07:12 UTC 2010
Ron Loftin <reloftin at twcny.rr.com>

On Mon, 2010-03-01 at 17:03 +0100, Niki Kovacs wrote:
> Hi,
> 
> I'm currently writing an install script for an application, and my 
> already limited Bash skills are a bit rusty.
> 
> I want to check if a group exists, and if it doesn't, then create it.
> 
> Only thing I found is:
> 
> if [ grep medintux /etc/group ]; then
> 	continue
> else
> 	groupadd medintux
> fi
> 
> Apparently I can't seem to "negate" the test, e. g. something like
> 
> if !(grep medintux /etc/group)
> 
> Any suggestions for the correct syntax here ?
> 

Try this:

grep -q medintux /etc/group || groupadd medintux

> Thanks,
> 
> Niki
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos
-- 
Ron Loftin                      reloftin at twcny.rr.com

"God, root, what is difference ?"       Piter from UserFriendly