title: Perl - Pipe command into another
body: <p>Quick question,</p>
  
  <p>Is there a way to pipe a command into another command via perl like you can in the *Nix command line?</p>
  
  <p>For example:<br>
  <code>free -m | grep Mem</code></p>
  
  <p>How would I be able to do the "piping" in Perl?</p>