#!/bin/sh
# On a Debian machine, list any updated packages that need installing.

hostname="`hostname -s`"
# If you aren't me, then you MUST change this line!
notify="ats-dcu-$hostname@offog.org.CHANGEME"

apt-get -qq update

outfile=/tmp/debian-check-updates.$$
trap "rm -f $outfile" 0
exec >$outfile

need_banner=true
apt-get -qqs dist-upgrade | sort | while read s p ; do
	if [ "$s" = "Inst" ] ; then
		if $need_banner ; then
			echo "debian-check-updates on `hostname` at `date`"
			echo
			echo "The following packages need installing:"
			echo
			need_banner=false
		fi
		echo "$p"
	fi
done

if [ -s $outfile ] ; then
	mailx -s "debian-check-updates $hostname" "$notify" <$outfile
fi