title: How to use rm to recursively remove all dirs starting with a prefix
body: <p>How can I remove all dirs that start with a prefix, So I have something like this</p>
  
  <ul>
  <li>xyzdirblah</li>
  <li>xyzdir2</li>
  <li>xyzdir3</li>
  <li>xyzdir4</li>
  <li>..more</li>
  </ul>
  
  <p>want to do via adb shell , android</p>