title: Schedule a cronjob on ssh with command line
body: <p>I am using the amazonaws es3 server.I want to schedule my cron with command line.
  I am using the this command for scheduling the cron job</p>
  
  <p>at -f shellscript.sh -v 18:30</p>
  
  <p>but it will schedule for only one time i want to configure manually like once a day or every five minutes .</p>
  
  <p>Please help with command which command i have to used</p>
  
  <p>Thnaks, </p>