title: Multiple progress bar
body: <p>In addition to my previous query concerning multi-threading in shell scripting, I am  curious if its possible to have multiple progress bar.</p>
  <p>Here is a code snippet of my expected result :</p>
  <pre><code>Output : 1 of 100  Files Completed   # Thread1
  Output : 10 of 45 files Completed     # Thread 2    
  </code></pre>
  <p>The lines are updated showing the progress. Would it be possible to implement it in shell?</p>