title: Perl regex - remove first part of dot-separated string
body: <p>I have to remove the first part of a dot-separated string. Such as:</p>
  
  <pre class="lang-none prettyprint-override"><code>test.domain.com          --&gt; domain.com
  sub.domain.example.com   --&gt; domain.example.com
  bar.foo.bar.hoster.net   --&gt; foo.bar.hoster.net
  </code></pre>
  
  <p>and so on...</p>
  
  <p>How to do this in perl?</p>