title: Android/Eclipse emulator how to wipe-data?
body: <p>I got below errors while trying the above question . does anyone know what's going wrong?</p>
  
  <pre><code>$ adb devices
  List of devices attached
  emulator-5554 device
  
  $ emulator -avd -wipe-data
  PANIC: Could not open: -wipe-data
  
  $ emulator -avd emulator-5554 -wipe-data
  PANIC: Could not open: emulator-5554
  </code></pre>