title: GAWK Script - Print filename in BEGIN section
body: <p>I am writing a gawk script that begins </p>
  
  <pre><code>#!/bin/gawk -f
  BEGIN { print FILENAME }
  </code></pre>
  
  <p>I am calling the file via <code>./script file1.html</code> but the script just returns nothing. Any ideas?</p>