Email Your Yum Updates

#!/bin/bash
#
# check-yum-updates.sh
#
# checks for yum updates and emails if there are any available
#
#
# change this to your email
#
  email="cheri.kevin@gmail.com"

#
# no need to change anything below here
#

yumtmp="/tmp/yum-check-update.$$"
yum="/usr/bin/yum"

$yum check-update >& $yumtmp

yumstatus="$?"

hostname=$(/bin/hostname)

case $yumstatus in
0)
# no updates!
exit 0
;;
*)
date=$(date)
number=$(cat $yumtmp | egrep '(.i386|.x86_64|.noarch|.src)' | wc -l)
updates=$(cat $yumtmp | egrep '(.i386|.x86_64|.noarch|.src)')
echo "
There are $number updates available on host $hostname at $date

The available updates are:
$updates
" | /bin/mail -s "UPDATE: $number updates available for $hostname" $email
;;
esac

# clean up

rm -f /tmp/yum-check-update.*