title: How to filter on column value in bash
body: <p>I'm facing a problem while trying to <code>grep</code> (filter) a logfile on the value of an integer.</p>
  
  <p><strong>logfile.log:</strong></p>
  
  <pre><code>2014-11-16 21:22:15 8 10.133.23.9 PROXIED ...
  2014-11-16 21:22:15 1 163.104.40.133 authentication_failed DENIED ...
  2014-11-16 21:22:15 15 163.104.40.134 authentication_failed DENIED ...
  2014-11-16 21:22:16 9 163.104.124.209 PROXIED ...
  </code></pre>
  
  <p>I have an int in column 3 : <code>8</code>, <code>1</code>, <code>15</code>, <code>9</code>.</p>
  
  <p>I need to grep only if: <code>value &gt; 10</code>.</p>
  
  <p>Something like: </p>
  
  <pre><code>cat logfile.log | grep {$2&gt;10}
  2014-11-16 21:22:15 15 163.104.40.134 authentication_failed DENIED ...
  </code></pre>