title: Making a command-line program "full screen"
body: <p>I am wondering how to create the appearance of a "full-screen" window inside a shell, as in vim, emacs, etc. Is it possible to do this programmatically in Ruby? And how platform-dependent would that be?</p>
  
  <p>Edit: I am not looking for how to make my <em>shell</em> go full-screen. I'm looking for a way to hide the previous commands entered and "fill" the shell screen with an app. It's for an installer.</p>