title: Passing variable to a shell script provisioner in vagrant
body: <p>I'm using a simple shell script to provision software for a vagrant setup as seen <a href="http://docs.vagrantup.com/v2/provisioning/shell.html" rel="noreferrer">here</a>.</p>
  
  <p>But can't figure out a way to take the command line arguments passed in to vagrant and send them along to an external shell script. Google reveals that this was added as a feature but I can't find any documentation covering it or examples out there.</p>