title: How to instruct cron to execute a job every second week?
body: <p>I would like to run a job through cron that will be executed every second Tuesday at given time of day. For every Tuesday is easy:</p>
  
  <pre><code>0 6 * * Tue
  </code></pre>
  
  <p>But how to make it on "every second Tuesday" (or if you prefer - every second week)?
  I would not like to implement any logic in the script it self, but keep the definition only in cron.</p>