title: How to remove commented block from a file?
body: <p>In that there is a commented block as <code>/*..*/</code> and <code>&lt;&lt;</code>, <code>&gt;&gt;</code>, <code>!!</code> symbols, I need to copy the contents of this file in another file, while removing commented block and other symbols.</p>
  
  <p>For example:</p>
  
  <pre><code>/*
  author : xyz
  date : 23/08/2015
  this block is only for reference
  */
  ? fill j.dat 
  !!
  a1  hi   hello
  b1  red orange
  !!
  ? fill s.dat 
  &lt;&lt;
  &gt;&gt;
  actual content of the file.  
  </code></pre>
  
  <p>I want to copy only <code>actual content of the file</code> to another file. Is there any regex I can use to avoid this?</p>