How to get a list of group members?

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# 1  
Old 11-13-2008
How to get a list of group members?

Is there a command to get a list of group members? Something similar to the groups command, but instead of passing a username and returning groups, you pass it a groupname, and it returns members?

It is difficult to do it manually because the group membership information is split across two files, /etc/passwd for primary group, and /etc/group for secondary membership.

thank you kindly in advance.

# 2  
Old 11-13-2008

Fill in 'xyz' with the group you want to search on, or put the line in a script with $1 instead:

grep xyz /etc/group | awk -F\: '{print $4}' | sed 's/\,/\n/g'
# 3  
Old 11-14-2008
Here's a script (I call it lsgroup) that should do the trick:

awk -F: -v group=$1 '
        NR==FNR && $1==group {
                for (i=1; i<=split($4,a,","); i++) print a[i]
        NR!=FNR && $4==gid { print $1 }
' /etc/group /etc/passwd | sort -u

# 4  
Old 11-14-2008
logins -g groupname
# 5  
Old 11-14-2008
Originally Posted by methyl
logins -g groupname
This works under Solaris too!!!!

Exactly what I want... Thank's Methyl!

Kudos to Annihilannic for a very creative solution.
# 6  
Old 11-16-2008
MySQL Well I never....

Originally Posted by methyl
logins -g groupname
What a useful command, how come I never came across that one before Smilie Thanks!
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