title: What does "**" mean in ANT?
body: <p>Often in ANT tasks, you will see "**" used similar to below:</p>
  
  <pre><code>&lt;copy todir="/something"&gt;
    &lt;fileset dir="/source"&gt;
      &lt;exclude name="**/*.sql"/&gt;
    &lt;/fileset&gt;
  &lt;/copy&gt;
  </code></pre>
  
  <p>What is the <code>**</code> in the name property? I've never seen the style of wildcard. Why is <code>*.sql</code> not good enough?</p>