title: Firefox/Chrome Shell for Ubuntu
body: <p>I have googled my tail off - but can't seem to find what I am looking for. In Ubuntu (or any Linux distro for that matter) is there a way to set the GUI shell to only be Firefox or Chrome. Meaning - I don't need an entire desktop environment - just the one application.</p>
  
  <p>I am pretty much trying to figure out a Linux equivalent to changing <code>HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon</code> from <code>explorer.exe</code> to <code>firefox.exe</code>.</p>