title: Awk to replace single quote
body: <p>I want to replace all <code>include('./</code> in a set of files with <code>include('</code>. I am trying to use awk as follows:</p>
  
  <pre><code>awk '{gsub("include\('"'"'./", "include\('"'"'", $0); print &gt; FILENAME}' *.php
  </code></pre>
  
  <p>It throws me this error. </p>
  
  <pre><code>awk: (FILENAME=xyz.php FNR=1) fatal: Unmatched ( or \(: /include('.//
  </code></pre>
  
  <p>Any help would be appreciated.</p>