Shell Programming and Scripting

echo " "; echo "Group       Users   "; echo " "; cat /etc/group |grep [5-9][0-9][0-9] | grep -v nfs

awk -F: '/[5-9][0-9][0-9]/{print $1" : "$4}' /etc/group

cat /etc/group | grep -v "^.*:$" | sed 's/\([a-zA-Z][a-zA-Z]*\):x:[0-9][0-9]*:\(.*\)/\1 : 2/'

#!/bin/ksh
awk -F: '{print $1}' /etc/group| sort | uniq |while read GROUP
do
    USERLIST=$( logins -g "${GROUP}" | awk '{print $1}' | sort |tr '\n' ' ' )
    echo "${GROUP} : ${USERLIST}"
done

awk -F: '/[5-9][0-9][0-9]/{print $1" : "$4}' /etc/group | grep -v nfs