====== APT-Checker ======

This script is meant to be run from ''/etc/cron.daily/''. It checks for available updated packages on a Debian system and sends a mail to the administrator.

<code bash>
#!/bin/sh

HOSTNAME=`hostname`
MAILTO="admin@example.com"
MAILFROM="apt checker <admin@example.com>"

apt-get update >/dev/null 2>&1

NEWPACKAGES=`apt-get --print-uris -qq -y upgrade 2>/dev/null |awk '{print $2}'`

if [ "$NEWPACKAGES" != "" ]
then
  mail -a "From: $MAILFROM" -s "New Packages for $HOSTNAME" $MAILTO <<EOF
There are new Packages available for $HOSTNAME:

$NEWPACKAGES

please run:
  ssh root@$HOSTNAME 'apt-get upgrade'

EOF
fi

exit 0;
</code>