title: How to make ls | less colorful?
body: <p>Using <code>ls</code> or many other commands, we can get colorful results like this:</p>
  
  <p><img src="https://i.stack.imgur.com/5fUaE.png" alt="enter image description here"></p>
  
  <p>But if those results are too long and after we pipe those results to <code>less</code>, the color is disappeared. </p>
  
  <p>This is the result of <code>ls -l | less</code>:</p>
  
  <p><img src="https://i.stack.imgur.com/5qM2H.png" alt="enter image description here"></p>
  
  <ol>
  <li><strong>Why the color is disappeared.</strong></li>
  <li><strong>How to make the result of <code>ls | less</code> colorful?</strong></li>
  </ol>