#!/bin/bash

#Taking hostname below

HOST=$(/bin/hostname)


#upgrading Kernel
/usr/bin/yum upgrade kernel -y

# checking latest installed kernel on server
LATEST=$(/bin/rpm -q kernel |tail -n1|sed -e 's/kernel-//')

# Checking currently used or running kernel on server 
CURRENT=$(/bin/uname -r)

# Checking here if latest kernel present on server and currently running kernel on server is same
if [ $LATEST == $CURRENT ]      
then
echo ""

else

printf "
Hello,

Latest kernel [ $LATEST ] is installed on server $HOST.
Currently Server is running old Kernel of version [ $CURRENT ].
To set latest kernel as current kernel, server $HOST should be rebooted.
Please schedule a reboot for server $HOST soon.

Thanks,
Support Team
APSC Infotech & Software Solutions Pvt Ltd.
--------------------------------------------------------
This is output of script created by APSC InfoTech & Software Solutions Pvt Ltd for their clients. 
The use of this script should be done with permission of APSC InfoTech & Software Solutions Pvt Ltd. 
Copywrite (c) 2007-2010 apsinfotech.com, Report Bugs to admin@apsinfotech.com
--------------------------------------------------------

" | mail -s "New Kernel Installed on $HOST" -c apscservers@gmail.com apscservers@gmail.com | curl -X POST --data-urlencode 'payload={ "username": "webhookbot", "text": "Latest kernel is installed on kara.dnsnetservice.com server. To set latest kernel as current kernel, Please reboot this server.", "icon_emoji": ":ghost:"}' https://hooks.slack.com/services/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

fi

# THE END
# Copywrite (c) 2007-2010 apsinfotech.com
# This script created by APSC InfoTech & Software Solutions Pvt Ltd for their clients. 
# The use of this script should be done with permission of APSC InfoTech & Software Solutions Pvt Ltd. 
# Copywrite (c) 2007-2010 apsinfotech.com, Report Bugs to admin@apsinfotech.com