title: Do I need to include #!/usr/bin/perl line in Perl script on Windows?
body: <p>I just installed ActivePerl on Windows and have begun to learn Perl. In the book that I'm reading, the first code example is this:</p>
  
  <pre><code>#!/usr/bin/perl
  
  use 5.010;
  
  say "Hello, world!";
  </code></pre>
  
  <p>Since I'm on Windows, I was wondering if I need to include the first line?</p>
  
  <p>I deleted the first line, and the program worked fine without it.</p>
  
  <p>Is this line used just on Unix systems?</p>