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yumnotifier
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yumnotifier
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#!/bin/sh
#
# Program: E-mail available yum updates <yumnotifier>
#
# Author: Matty < matty91 at gmail dot com >
#
# Current Version: 1.2
#
# Revision History:
#
# Version 1.2
# - Removed ! from if statement - John Beaman
# - Changed comments to reference "yumnotifier", not
# "yumupdate" -- John Beaman
#
# Version 1.1
# - Switched test statement to use "-s" - Luca Rozza
#
# Version 1.0
# Initial Release
#
# Last Updated: 10-24-2007
#
# Purpose:
# yumnotifier checks for updated software package, and E-mails the
# address defined in the ${ADMIN} variable if updates are available.
#
# License:
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# Installation:
# Copy the shell script to a suitable location
#
# Usage:
# To check for new updates each day at midnight, a cron job similar to the
# following can be used:
#
# $ crontab -l | grep yumnotifier
# 0 0 * * * /etc/scripts/yumnotifier
#
# Sample output
# An E-mail similar to the following is sent if updates are available:
#
# From [email protected] Sat Jul 15 19:24:59 2006
# Date: Sat, 15 Jul 2006 19:24:59 -0400
# From: root <[email protected]>
# To: [email protected]
# Subject: Updates available for biscuit
#
# ==== The following updates are available for biscuit ===
#
# comps.i386 2:4.3CENTOS-0.20060314 base
# gtk2.i386 2.4.13-18 base
# kernel.i686 2.6.9-34.0.2.EL update
# libtiff.i386 3.6.1-10 update
# mysql.i386 4.1.20-1.RHEL4.1 update
# mysql-devel.i386 4.1.20-1.RHEL4.1 update
# newt.i386 0.51.6-7.rhel4 base
# php.i386 4.3.9-3.15 update
# php-ldap.i386 4.3.9-3.15 update
# php-pear.i386 4.3.9-3.15 update
# postgresql-libs.i386 7.4.13-2.RHEL4.1 update
# rpmdb-CentOS.i386 2:4.3-0.20060314 base
# sendmail.i386 8.13.1-3.RHEL4.5 update
# sendmail-cf.i386 8.13.1-3.RHEL4.5 update
# spamassassin.i386 3.0.6-1.el4 update
# vixie-cron.i386 4:4.1-44.EL4 update
# xorg-x11-Mesa-libGL.i386 6.8.2-1.EL.13.25.1 update
# xorg-x11-font-utils.i386 6.8.2-1.EL.13.25.1 update
# xorg-x11-libs.i386 6.8.2-1.EL.13.25.1 update
# xorg-x11-xauth.i386 6.8.2-1.EL.13.25.1 update
# xorg-x11-xfs.i386 6.8.2-1.EL.13.25.1 update
PATH=/bin:/usr/bin:/sbin:/usr/sbin
export PATH
# Locations of binaries
GREP="/bin/grep"
HOST=`hostname`
MAIL="/bin/mail"
MKTEMP="/bin/mktemp"
YUM="/usr/bin/yum"
# Who to E-mail with new updates
ADMIN="matty"
if [ ! -f ${YUM} ];then
echo "Cannot find ${YUM}"
exit 1
fi
if [ ! -f ${MKTEMP} ];then
echo "Cannot find ${MKTEMP}"
exit 1
fi
if [ ! -f ${MAIL} ];then
echo "Cannot find ${MAIL}"
exit 1
fi
if [ ! -f ${GREP} ];then
echo "Cannot find ${GREP}"
exit 1
fi
# Dump the yum results to a safe working file
WORK=`${MKTEMP} /tmp/yum.results.XXXXXX`
${YUM} -e0 -d0 check-update > ${WORK}
# If there are updates available, E-mail them
if [ -s ${WORK} ];then
REPORT=`${MKTEMP} /tmp/yum.report.XXXXXX`
echo "==== The following updates are available for ${HOST} ===" > ${REPORT}
cat ${WORK} >> ${REPORT}
cat ${REPORT} | ${MAIL} -s "Updates available for ${HOST}" ${ADMIN}
fi
# Cleanup temporary files
rm ${REPORT} ${WORK}