Any way of listing users by groups?

[azazel00]

Hello

Well this isnt really a problem, just some task I want to accomplish.
Im using Postfix to run my office's internal mail (Quite a few users). Im insterested in a way of listing every user in a group in order to facilitate the creation of aliases.

sort of like:

listusers clinicaldept

userx
usery
userz

So far I havent had much luck with some random commands I've been testing. But then again my linux skills are something to be ashamed of.

The closest I've got is listing all logged in users. Which turns out to be a list containing only my name. lol

Anyhelp will be appreciated.
All the best.
az

[Jman]

Groups are contained in the /etc/groups file. It looks ugly, the comma seperated list at the end is what you want.

[pushback]

You will have to play with the formatting and it's probably not the most efficient method but I threw this together for you. Cut & paste it into a text file, then chmod 755 the file, then run it.


(sorry--but the forum suppressed the indents)



#/bin/sh
for i in `cat /etc/group`
do
GROUPNAME=`echo $i|cut -f1 -d ':' `
echo "Checking for Group $GROUPNAME members."
GID=`echo $i|cut -f3 -d ':' `
for j in `cat /etc/passwd`
do
USERGID=`echo $j|cut -f4 -d ':' `
if [ "$GID" = "$USERGID" ]; then
USERNAME=`echo $j|cut -f1 -d ":" `
echo "$USERNAME is in the $GROUPNAME group."
fi
done
echo " "
done

[azazel00]

Thanks for the script mate.
Will post with results tomorrow.

Regards

PS. I think the [c.ode][/c.ode] tags might help with indents, not sure tho.