s="chapter" data-level="2.4.1" data-path="intro.html"><a href="intro.html#introduction"><i class="fa fa-check"></i><b>2.4.1</b> Introduction</a></li>
<li class="chapter" data-level="2.4.2" data-path="intro.html"><a href="intro.html#introduction-to-r"><i class="fa fa-check"></i><b>2.4.2</b> Introduction to R</a></li>
<li class="chapter" data-level="2.4.3" data-path="intro.html"><a href="intro.html#introduction-to-bash"><i class="fa fa-check"></i><b>2.4.3</b> Introduction to Bash</a></li>
<li class="chapter" 