[CentOS] Slightly OT: check creation of a group

m.roth at 5-cent.us m.roth at 5-cent.us
Mon Mar 1 16:22:05 UTC 2010


Niki wrote:
>
> 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
>
Why not
  if [ `grep -c medintux /etc/group` == 0 ]; then
     groupadd medintux
  fi

?

          mark



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