title: use sed to extract the last portion of a string
body: <p>I have a string like the following:</p>
  
  <pre><code>ABC &gt; D&amp;E &gt; FGH
  </code></pre>
  
  <p>and I want to extract the last portion  </p>
  
  <pre><code> FGH
  </code></pre>
  
  <p>How do I use sed to achieve that?</p>