title: Force boot into Linux command line
body: <p>I am trying a number of settings on my Ubuntu 11.10 box. Unfortunately, I messed up some settings and the X window does not boot up. </p>
  
  <p>I need to boot into command line to restore some settings. </p>
  
  <p>However, everytime I boot, the system hangs at the Ubuntu welcome screen. All I can do is to reboot the machine.</p>
  
  <p>Is there anyway I can boot into the command line directly? </p>
  
  <p>Many thanks</p>