title: Easiest way to copy a single file from host to Vagrant guest?
body: <p>I have a use case where I occasionally want to copy a single file from my host machine to the Vagrant guest.</p>
  
  <p>I don't want to do so via traditional provisioners (Puppet / Chef) because this is often a one-off -- I just want something quick to add to my Vagrantfile.</p>
  
  <p>I don't want to share an entire directory, possibly because I want to overwrite an existing file without nuking an entire directory on the guest.</p>
  
  <p>It also seems a bit overkill to write a shell provisioning script, and deal with potential escaping, when all I want to do is copy a file.</p>
  
  <p>So, what's the easiest way to copy a single file from host to guest?</p>