Shell script to find cpu utilization using SAR command and send email if usage is more than 75 percent

Shell script to find cpu utilization using SAR command and send email if
usage is more than 75 percent

References

Reference NO 1

http://stackoverflow.com/questions/15203158/shell-script-to-find-cpu-utilization-using-sar-command-and-send-email-if-usage-i

Reference NO 2

http://stackoverflow.com/questions/10071031/shell-script-to-email-cpu-utilization-by-email

Reference NO 3

http://nixcraft.com/shell-scripting/18539-looking-shell-script-monitor-cpu-usage-send-mail-once-exceed-75-a.html

Reference NO 4

http://www.cyberciti.biz/tips/how-do-i-find-out-linux-cpu-utilization.html

Reference NO 5

http://forums.cpanel.net/f34/troubleshooting-high-server-loads-linux-servers-319352.html

Reference NO 6

http://hoopercharles.wordpress.com/2010/02/05/faulty-quotes-6-cpu-utilization/

Reference NO 7

http://www.sarcheck.com/osrdoc371.htm

Reference NO 8

https://www.ibm.com/developerworks/mydeveloperworks/wikis/home/wiki/Power+Systems/page/nmon_manual