title: How do I run phpunit over folders matching a pattern
body: <p>I have a folder structure like this</p>
  
  <pre><code>root_folder
      folder1
        _unittest
     &lt;other files&gt;
  folder2
     _unittest
     &lt;other files&gt;
  </code></pre>
  
  <p>Now what I want to do is run phpunit from the root on files found in all the subfolders named _unittest</p>
  
  <p>Can anyone suggest how this can be done (maybe using the xml config file?)</p>
  
  <p>Thanks</p>