title: How to remap fast up and down (ctrl u and ctrl d) to ctrl j and ctrl k in Vim
body: <p>How can I remap the fast up and down commands?<br>
  I would like to remap <kbd>Ctrl-U</kbd> to <kbd>Ctrl-K</kbd> and <kbd>Ctrl-D</kbd> to <kbd>Ctrl-J</kbd>? </p>
  
  <p>I tried the following but no luck...   </p>
  
  <pre><code>nnoremap &lt;c-u&gt; &lt;c-k&gt; 
  nnoremap &lt;c-d&gt; &lt;c-j&gt;
  </code></pre>
  
  <p>FYI - Vim is installed in Ubuntu Server</p>