Linode default CentOS 6.5 64bit deployment does not include Crontab or Cron Job. Here is a reference for the people like me.
Install the package and dependencies
#yum install vixie-cron
Enable the package on boot and start
# /sbin/chkconfig crond on # /etc/init.d/crond start
crontab command option:
crontab: usage error: unrecognized option
usage: crontab [-u user] file
crontab [-u user] [ -e | -l | -r ]
(default operation is replace, per 1003.2)
-e (edit user’s crontab)
-l (list user’s crontab)
-r (delete user’s crontab)
-i (prompt before deleting user’s crontab)
-s (selinux context)