I left a Linux security guide half-finished for months — Copilot helped me wrap it up

I left a Linux security guide half-finished for months — Copilot helped me wrap it up (and taught me something I didn't expect)

The project that sat there collecting dust

I'm a teacher at SENAI in Taguatinga, Brazil. I teach Systems Development and Fullstack. A few months ago I created the linux-security-guide — a practical Linux guide focused on security, born directly from my classroom.

The reason I started it was simple and honest: I was tired of 2-hour YouTube videos teaching things wrong, and course materials that just make students memorize commands. I had about 15 students fail job interviews because they couldn't answer "how do you secure a Linux server in practice?" — and that made me angry. So I put together everything I teach in class and use day-to-day so nobody would go through the same frustration I went through when I started.

The project grew well. Fundamentals, networking, hardening, practical labs. But at some point it stopped. It just sat there with a nice structure, half-finished modules, and labs that didn't show students what they should actually see in the terminal.