I recently passed the CompTIA Linux+ (XK0-005) exam, and while this wasn’t my first time working with Linux, this cert took my understanding to another level. I’ve picked up Linux skills through previous studying and certifications, but going through this exam helped me fill in gaps, deepen my knowledge, and sharpen my ability to work more confidently across different Linux environments.

If you’re working toward a career in cybersecurity, like I am, getting more comfortable with Linux is a game-changer. A lot of tools and techniques we use in cyber rely on Linux, and not just any Linux—specific distros like Kali Linux. So being fluent in the OS itself, not just the tools that run on top of it, makes a big difference.

What the XK0-005 Covers

The exam is split into four domains:

1. System Management – things like the boot process, systemd services, package management, and logging.
2. Security – file permissions, user access, firewall configs, encryption, and more.
3. Scripting, Containers & Automation – shell scripting, Git, automation tools like Ansible, and an intro to containers.
4. Troubleshooting – you’re expected to solve real-world issues, from broken services to misconfigured permissions.

What stood out to me was how practical the exam felt. It doesn’t just test theory—it pushes you to think like someone who actually manages and fixes systems. And since it’s distro-agnostic, it forces you to think critically about what you’re doing, no matter what Linux flavor you’re in.

Hands-On Is Where It All Comes Together

Even with prior experience, what made everything click for me was getting hands-on in a lab. Reading and watching videos helped build my foundation, but the real learning happened in the terminal.

I recommend setting up virtual machines with both Rocky Linux (RHEL-based) and Ubuntu (Debian-based). Seeing the differences and similarities side-by-side really helps you understand how Linux systems behave—and it mirrors what you’ll encounter in the real world.

Study Materials That Helped Me Succeed

Here’s what I used and would highly recommend:

• Dion Training – Jason Dion’s Linux+ course and practice exams were solid. He does a great job explaining things in a way that sticks.
• Sybex Linux+ Study Guide – Great for drilling into the details and making sure you’re not missing anything for the exam.
• CompTIA CertMaster Labs – These were a game changer. They let me implement theory with guided labs in a safe, hands-on environment. If you’re someone who learns best by doing, these are worth every penny.

Why This Cert Matters (Especially for Cybersecurity)

In cybersecurity, Linux isn’t just useful—it’s practically a must. From building and running tools on Kali Linux to managing servers, scripting automation, and digging through logs, Linux is everywhere in this field. The more fluent you are, the more capable and confident you’ll be when things go sideways and you need to troubleshoot or take action fast.

For me, Linux+ wasn’t just about passing another cert—it was about leveling up. And it’s already paying off.

If you’re heading down the cyber path or just want to get more confident working with Linux systems, I recommend going for it. Just ensure you’re not only studying the material—get your hands on the keyboard.