== Examples ==
; get first column from mw table data
awk '/\|-/{getline;print}' /tmp/terror.txt | sed s/\|// | sed s/'^ *'// | sort -u
; see who's trying to SSH into your server (brute force attack)
awk '/Invalid user/ {print $8}' /var/log/auth.log | sort | uniq -c
== Docs ==