d-begin"><i class="fa fa-check"></i><b>6.1.2</b> Column splitting, fields, <code>-F</code>, <code>$</code>, <code>NF</code>, <code>print</code>, <code>OFS</code> and <code>BEGIN</code></a></li>
<li class="chapter" data-level="6.1.3" data-path="sed-awk-and-regular-expressions.html"><a href="sed-awk-and-regular-expressions.html#a-brief-introduction-to-regular-expressions"><i class="fa fa-check"></i><b>6.1.3</b> A brief introduction to regular expressions</a></li>
<li class="chapter" data-level="6.1.4" data-pa