Get list of packages to be updated on debian system

pkgupdate

#!/bin/sh

# *********************************************************************	#
# pkgupdate	: script for calling from crontab to update debian	#
#		  packages on a machine using apt-get			#
#		  Mainly this is a two commands				#
#									#
#		  apt-get update && apt-get upgrade -y -d upgrade	#
#									#
#		  but made readable report from the output of those	#
#		  two commands						#
#									#
# version 0.1	: cj (2003-12-26) initial				#
# version 0.1a	: cj (2004-07-22) the one that work.			#
# version 0.1b	: cj (2004-08-08) improve report message		#
# version 0.1c	: cj (2005-05-16) mail should be sent to all sysadmin	#
# *********************************************************************	#
HOST=`hostname`
DATE=`date +%Y%m%d`
DATE2=`date`
LOG=`mktemp /tmp/.pkgupdate.XXXXXX`
ADMIN="sysadmin@localhost"

sudo apt-get update > $LOG
sudo apt-get -y -d upgrade >> $LOG

line=`cat $LOG | grep upgraded | grep installed | grep remove | sed -e 's/packages//'`

upgrade=`echo $line | cut -f1 -d' '`
install=`echo $line | cut -f3 -d' '`
remove=`echo $line | cut -f6 -d' '`
keptback=`echo $line | cut -f10 -d' '`
RESULT="$upgrade,$keptback,$remove,$install"

SUBJ="$DATE $HOST ($RESULT) pkgupdate"

( cat <<EOT
Debian packages update for '$HOST' on "$DATE2"
====================================================================
Summary:
	Upgrade:  $upgrade
	KeptBack: $keptback
	Remove:   $remove
	Install:  $install
====================================================================
Detail:
EOT
cat $LOG
) | mail -s "$SUBJ" $ADMIN

rm -f $LOG

# *********************************************************************	#
# end of script								#
# *********************************************************************	#