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#!/bin/bash
##################################################
# Name: check-yum-updates.sh
# Description: Checks for yum updates.

##################################################
# Set Variables
#
YUMTMP="/tmp/yum-check-update.$$"
sudo /usr/bin/yum check-update | grep -v kernel* | grep -v kmod* >& $YUMTMP
YUMSTATUS="$?"
#
##################################################
# Main Script
#
case $YUMSTATUS in
0)
# no updates!
echo "There are no updates available."
exit 0
;;

*)
# updates available
echo "Updates are available."
exit 1
;;
esac
##################################################