title: how to write multiple exec arguments in ant
body: <p>I want to write an ant script that will </p>
  
  <ol>
  <li>start up a new terminal</li>
  <li>Change user</li>
  <li>and run the Appium session</li>
  </ol>
  
  <p>This is what i have so far but it doesn't do anything</p>
  
  <pre><code>    &lt;exec executable="/bin/bash" os="${os.unix}" spawn="true"&gt;
          &lt;arg value="-c" /&gt;
          &lt;arg value="gnome-terminal su appium" /&gt;
          &lt;arg value="appium &amp;amp;" /&gt;
      &lt;/exec&gt;
  </code></pre>