title: Find and replace text in a file between range of lines using sed
body: <p>I have a big text file (URL.txt) and I wish to perform the following using a single <em>sed</em> command:</p>
  
  <ol>
  <li><p>Find and replace text 'google' with 'facebook' between line numbers 19 and 33. </p></li>
  <li><p>Display the output on the terminal without altering the original file.</p></li>
  </ol>