07 May 2007 Find duplicate usernames in /etc/passwd

Posted by Hans-Henry Jakobsen

# cat /etc/passwd | awk -F: '{print $1}' | sort | uniq -c | grep -v 1
# cat /etc/shadow | awk -F: '{print $1}' | sort | uniq -c | grep -v 1
# awk -F: '{ print $1, $5}' /etc/passwd

Tags: awk, grep, sort