title: empty an existing array in ksh
body: <p>I have script which stores the list of files in an array as shown below</p>
  
  <pre><code>set -A my_array $(ls -tr $INPUT_DIRECTORY/*)
  </code></pre>
  
  <p>I have to empty this <code>my_array</code> variable to use it for other purpose. I cannot declare another new array.</p>
  
  <p>Is there any way to clear the content of the array and reuse it again?</p>
  
  <p>Thanks in advance.</p>