As I remember, this script is one of my first scripts, it's really simple, it was some kind of 30 seconds script to solve a problem :D
It uses cPanel APIs to check cPanel license for this IP/Hostname, and If it not active, Nagios/Opsview will notify you ... that's it :-)
#!/bin/bash
#
# DESCRIPTION:
# Simple (really simple :D) Nagios script to check cPanel license.
#
# SYNTAX:
# ./check_cpanel_license.sh -H SERVER_IP/HOSTNAME (or $HOSTADDRESS$ in Nagios/Opsview)
#
# BY:
# Ahmed M. AbouZaid
#
if [ "$1" = "-H" ]; then
curl -s http://verify.cpanel.net/verifyFeed.cgi?ip=$2 | grep -q 'status="1"';
if [ $? = 0 ]; then
echo "OK - CPANEL license is active."
exit 0
else
echo "CRITICAL - CPANEL license is inactive."
exit 2
fi
else
echo "Usage: $0 [OPTION]"
echo "-H IP/Hostname"
fi
