A script for monit monitoring daemon that checks for updates in distros using APT
This is inspired by the Nagios Plugin check_debian_packages
The logic of this solution relies on the fact that monit can check the status of programs it executes and later use that for resolving the problems reported
Here is example configuration you can put inside monitrc, assuming you have
put the script in the /opt directory.
check program apt path /opt/check-debian-updates.pl
if status > 0 then alert