title: Understanding uname output
body: <p>What do the various pieces of <code>uname -a</code> output mean? Following is an example output:</p>
  
  <pre><code>Linux mymachine 2.6.18-194.e15PAE #1 SMP Fri Apr 2 15:37:44 EDT 2010 i686 i686 i386 GNU/Linux
  </code></pre>
  
  <p>I gather that Linux is the O.S, 2.6.18-194.e15PAE is the kernel version. What do the rest of the pieces mean?</p>
  
  <p>Appreciate your help. </p>