title: Monitoring progress within xargs
body: <p>Is there any way to track or monitor progress within <code>xargs</code>?</p>
  
  <p>I'm replacing a <code>for</code> loop with <code>find … | xargs</code> for performance (specifically to run tasks in parallel). I've read that <code>parallel</code> has a progress flag, but I was wondering if there was a way to accomplish this strictly using <code>xargs</code>.</p>
  
  <p>I'm also aware that tasks run in parallel via <code>xargs</code> will not necessarily finish in the correct order, which compounds the complexity of monitoring progress. Even if a solution would give me a general idea of the progress, that would be a great start. </p>