title: Recursively listing directory with Apache pig
body: <p>Is there a way to recursively list all files in a specific directory, using only pig embedded functions ? An equivalent would be <code>ls -R</code> in <em>bash</em>.</p>
  
  <p>There exists a <code>ls</code> command, but it doesn't take parameters.</p>
  
  <p>I'm aware it may easily be implemented in java, but would rather avoid it if possible.</p>