title: How to tell a crontab to expire on particular date?
body: <p>It is straightforward to execute a task for every 6 hours using the following cron pattern : </p>
  
  <p><code>* */6 * * *</code></p>
  
  <p>Is it possible to stop the above cron job on particular date, say, <code>2018-02-10</code>?</p>