title: Remove lines containing a string from all files in directory
body: <p>My server has been infected with malware. I have upgraded my Linux server to the latest version and no new files are being infected, but I need to clean up all the files now.</p>
  
  <p>I can locate all the files doing the following:</p>
  
  <pre><code>grep -H "gzinflate(base64_decode" /home/website/data/private/assets/ -R | cut -d: -f1
  </code></pre>
  
  <p>But, I want to now delete the line containing <code>gzinflate(base64_decode</code> in every single file.</p>