title: tar removing leading '/' from member names
body: <p>I got an error when I append > <code>/dev/null</code> to tar command, anyone know what's going on in second example?</p>
  
  <p>good:</p>
  
  <pre><code> tar -cvf $kname /var/www
  </code></pre>
  
  <p>bad:</p>
  
  <pre><code> tar -cvf $kname /var/www &gt; /dev/null
  
   error:tar: Removing leading `/' from member names
  </code></pre>