title: Why does vi behave differently in Ubuntu than in CentOS?
body: <p>I've been getting more and more comfortable using vi on a daily basis, but one thing that bothers me is that when I use it on Ubuntu it behaves differently than when I use it on CentOS (and probably other places).  I actually prefer the way it works in CentOS.</p>
  
  <p>Here are three things that are really bothering me on Ubuntu:</p>
  
  <ol>
  <li><p>In CentOS insert mode there is a big bold notice at the bottom that I'm in INSERT mode, but in Ubuntu there is no notice so I can never tell which mode I'm in.</p></li>
  <li><p>In CentOS insert mode I can press the up/down keys and the cursor will move up and down.  But when I'm in Ubuntu pressing up and down inserts the letters A and B respectively on new lines.  </p></li>
  <li><p>In CentOS insert mode I can use the backspace key and it will delete the character that is before the cursor, but in Ubuntu I just hear a beep sound and nothing happens.  I can press the delete key in command mode, but I'd rather be able to press the backspace key.</p></li>
  </ol>
  
  <p>Are these differences something that I have to live with or is it an easy fix?</p>