title: How to insert an offset to hexdump with xxd?
body: <p>Is there an easy way to add an offset to the hex dump generated by xxd ?</p>
  
  <p>i.e instead of </p>
  
  <pre><code>0000: &lt;data&gt;
  0004: &lt;data&gt;
  0008: &lt;data&gt;
  </code></pre>
  
  <p>I should get</p>
  
  <pre><code>Offset+0000: &lt;data&gt;
  Offset+0004: &lt;data&gt;
  Offset+0008: &lt;data&gt;
  </code></pre>