I think part of it too is just exposing readers to some of these, some of these tools and concepts that they have at their disposables. And the thing that I made a note of in this chapter when I was reading your book is UFW or Uncomplicated Firewall. That thing is so easy to set up and it's great. So then basically for the rest of the book, you said, look, you could sit down and manually type these out at the command line, but that doesn't make a lot of sense. Like let's make this reproducible.