1. Requirement
install -y python-setuptools
easy_install pip
pip install IPy
yum install vixie-cron crontabs -y
2. Timing tasks
crontab -l
crontab -e
*/5 * * * * /root/ipMonitor/ipMonitor.py
#service crond start
#service crond stop
service crond restart
service crond reload
service crond status