title: What is the opposite of `mknod`?
body: <p>I am learning to write character device drivers from the <a href="http://www.vijaymukhi.com/documents/books/linux/chap5.html">Kernel Module Programming Guide</a>, and used <code>mknod</code> to create a node in <code>/dev</code> to talk to my driver.</p>
  
  <p>However, I cannot find any obvious way to remove it, after checking the manpage and observing that <code>rmnod</code> is a non-existent command.</p>
  
  <p>What is the correct way to reverse the effect of <code>mknod</code>, and safely remove the node created in <code>/dev</code>?</p>