I’m David Perreault, an embedded systems engineer and Linux specialist with over a decade of hands-on experience working with open-source technologies in critical systems environments. From aerospace applications to backend infrastructure, Linux has always been at the core of what I do.

After years of mentoring colleagues and junior devs, I noticed a gap in practical, certification-focused Linux training — so I started building study tools that focus on what really matters for exam day and the job.

I create:

* Practice exams aligned to LPIC/Linux Essentials objectives

* Flashcards that reinforce commands, concepts, and scenarios

* Simple breakdowns of real-world Linux workflows

My goal is to make Linux less intimidating and more accessible for anyone serious about leveling up.

Let’s prep smarter — and get you certified.