title: Ant run command with pipes
body: <p>I must to implement command : <code>java -jar test.jar page.xml | mysql -u user -p base</code>
  in ant. So i Have tried with this task:</p>
  
  <pre><code>&lt;java jar="test.jar" fork="true"&gt;
    &lt;arg line="page.xml | mysql -u user -p base"/&gt;
  &lt;/java&gt;
  </code></pre>
  
  <p>But i have got en exception with pipe - "|" :</p>
  
  <pre><code> java.lang.IllegalArgumentException: Input already set; can't set to |
  </code></pre>
  
  <p>So, that's the problem:)</p>