CompTIA Linux+ (XK0-005) Study Guide
CompTIA Linux+ is the vendor-neutral Linux administration certification. Exam XK0-005 validates the hands-on skills to configure, manage, secure, and troubleshoot Linux systems—the operating system that runs most servers, cloud workloads, and containers.
Overview
Level
Intermediate
Vendor
CompTIA
Audience
Systems administrators, cloud and DevOps hopefuls, and IT pros who need to prove real Linux command-line and administration skills. Best with some general IT or sysadmin background.
Why get Linux+
Linux runs the internet—most servers, the majority of cloud workloads, and nearly all containers. Linux+ proves you can actually administer it from the command line: manage users and permissions, configure services, write shell scripts, work with containers, and troubleshoot. Because it's vendor-neutral, the skills apply across Red Hat, Ubuntu, and every other distribution. For anyone heading toward cloud, DevOps, cybersecurity, or systems administration, Linux fluency is a near-universal requirement, and Linux+ is a recognized way to validate it without committing to a single distro's ecosystem.
Salary expectations
Typical salary range
$75,000 – $120,000
Linux skills command strong pay because they underpin cloud and DevOps. Linux administrators commonly earn $75K–$100K, with experienced admins and cloud/DevOps-leaning roles reaching $105K–$120K+. Linux+ is most valuable stacked with cloud and automation skills, which move you toward the higher-paying DevOps and SRE tracks.
When to get Linux+
Get Linux+ when you want to prove Linux administration skills for a sysadmin, cloud, DevOps, or security role. It pairs naturally with A+/Network+ (general IT foundation) and with cloud certs, since most cloud workloads run on Linux. If you're brand new to the command line, spend time in a Linux VM first—Linux+ assumes you can work comfortably in a terminal.
Exam details
Exam Quick Reference
- Exam Code
- XK0-005
- Vendor
- CompTIA
- Level
- Intermediate
- Duration
- 90 minutes
- Format
- Up to 90 questions: multiple choice and performance-based. Passing score: 720 (on a scale of 100–900).
- Questions
- Up to 90 questions
Renewal: Valid for 3 years. Renew through CompTIA's Continuing Education (CE) program by earning CEUs, or by passing a higher-level CompTIA exam.
Skills covered
System Management (32%)
- Managing files, directories, and permissions
- Users, groups, and access control
- Software and package management (apt, dnf/yum, rpm)
- Processes, services, and systemd
- Storage, filesystems, and the boot process
Security (21%)
- File and directory permissions, ownership, and ACLs
- SSH, key-based authentication, and remote access hardening
- Firewalls (firewalld/iptables) and SELinux/AppArmor
- User and privilege management (sudo)
- Securing services and applying updates
Scripting, Containers & Automation (19%)
- Bash scripting fundamentals and control structures
- Cron jobs and scheduled tasks
- Containers (Docker/Podman) basics
- Infrastructure automation concepts (Ansible)
- Version control with Git
Troubleshooting (28%)
- Diagnosing storage, filesystem, and disk issues
- Network connectivity troubleshooting
- CPU, memory, and process performance issues
- Service and boot failures
- Reading logs (journald, /var/log) to find root causes
Step-by-step study path
This sequence reflects what consistently works. Follow it in order—don't skip ahead.
- 1
Download the XK0-005 exam objectives
Get the official Linux+ XK0-005 objectives from CompTIA. The domains span system management, security, scripting/automation, and troubleshooting—use them to structure your study.
- 2
Set up a Linux lab you can break
Install a Linux VM (Ubuntu, Fedora, or CentOS Stream) and live in the terminal. Linux+ is hands-on—nothing builds command-line fluency like actually running the commands and fixing what you break.
- 3
Work through a primary video course
Choose one comprehensive XK0-005 course and complete it end to end. Jason Dion's Linux+ course on Udemy covers all domains with demos and labs. See the paid resources section.
- 4
Read the official study guide
The Sybex Linux+ Study Guide (XK0-005) by Blum & Bresnahan is the standard written reference. Use it to deepen system management and troubleshooting, which reward detailed command knowledge.
- 5
Practice the command line every day
Drill core tasks until they're automatic: permissions, package management, services, networking, log reading, and basic Bash scripts. Sites like OverTheWire (Bandit) make terminal practice into a game.
- 6
Drill performance-based questions
Linux+ includes PBQs that ask you to perform real terminal tasks. Practice them specifically—knowing a command conceptually is different from typing it correctly under time pressure.
- 7
Take timed practice exams
Use full-length XK0-005 practice exams. Aim to score consistently above 85% before booking. Review every miss and re-run the command in your lab to lock it in.
- 8
Schedule and sit the exam
Register through Pearson VUE for the 90-minute exam (test center or online proctored). Book about two weeks out to set a deadline and keep your terminal practice sharp.
Ready for a structured course?
A top-rated course covers every Linux+ exam domain in order. See the paid resources section below for options and pricing.
View course options →Free resources
The official XK0-005 objectives across all domains. Your study roadmap—start here.
A free, gamified way to build Linux command-line fluency level by level. Excellent for cementing the terminal skills Linux+ tests.
A free, beginner-friendly walkthrough of Linux fundamentals—filesystem, permissions, processes, networking. A good companion to a video course.
A free, comprehensive book on the Linux command line. Deep reference for the shell and scripting topics on the exam.
Active community with Linux+ study advice and recent XK0-005 pass reports. Search the Linux+ flair before posting.
Paid resources
The resources below are the most commonly recommended for the XK0-005 exam. Udemy prices reflect typical sale pricing—discounts run frequently.
| Provider | Type | Price | Best for | Link |
|---|---|---|---|---|
| Udemy – Jason Dion Linux+ (XK0-005) Course | Video Course | ~$15–$20 (on sale) | Most candidates – full video coverage of all XK0-005 domains with demos and labs | |
| Udemy – Linux+ (XK0-005) Practice Exams | Practice Exams | ~$15–$20 (on sale) | Final exam preparation with realistic, timed questions across all domains | |
| CompTIA Linux+ Study Guide XK0-005 (Sybex, Blum & Bresnahan) | Book | ~$45–$60 | Candidates who want the definitive written reference covering 100% of the XK0-005 objectives |
Udemy – Jason Dion Linux+ (XK0-005) Course
Video Course · ~$15–$20 (on sale)
Most candidates – full video coverage of all XK0-005 domains with demos and labs
Jason Dion's Linux+ course covers all objectives with hands-on demonstrations. Pair with your own Linux VM for practice.
Udemy – Linux+ (XK0-005) Practice Exams
Practice Exams · ~$15–$20 (on sale)
Final exam preparation with realistic, timed questions across all domains
Use to gauge readiness before booking. Re-run any command you miss in your own terminal to lock it in.
CompTIA Linux+ Study Guide XK0-005 (Sybex, Blum & Bresnahan)
Book · ~$45–$60
Candidates who want the definitive written reference covering 100% of the XK0-005 objectives
The standard Linux+ book. Best used alongside a video course and constant hands-on terminal practice.
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Vouchers & exam cost
The XK0-005 exam runs roughly $358–$369 USD. Verify current pricing on the official CompTIA store before purchasing; voucher + retake bundles are sometimes available.
Frequently asked questions
Is CompTIA Linux+ worth it?
Yes, especially for cloud, DevOps, and sysadmin paths. Linux runs most servers and cloud workloads, so proving Linux administration skill is broadly useful. Linux+ is vendor-neutral, so it applies across all distributions.
Is Linux+ good for beginners?
It's intermediate, not absolute-beginner. There's no formal prerequisite, but Linux+ assumes you can work comfortably in a terminal. Complete beginners should spend a few weeks in a Linux VM building command-line basics first.
How hard is the XK0-005 exam?
It's a hands-on exam. The performance-based questions ask you to perform real terminal tasks, so conceptual knowledge alone isn't enough. Candidates who practice daily in a real Linux environment find it very manageable.
How long does it take to study for Linux+?
Most candidates spend 2 to 4 months part-time. Those with existing Linux or sysadmin experience may move faster. Daily command-line practice matters far more than passive video watching.
Linux+ or Red Hat (RHCSA) — which should I get?
Linux+ is vendor-neutral and broader; RHCSA is Red Hat-specific and deeply hands-on. Linux+ is a strong general credential and good first step; RHCSA carries more weight specifically in Red Hat shops. Many people do Linux+ first.
What comes after Linux+?
Common next steps are cloud certifications (AWS, Azure—most workloads run on Linux), DevOps tooling and automation, or a vendor-specific Linux cert like RHCSA. Linux+ pairs naturally with cloud and DevOps paths.
Does Linux+ expire?
Yes. Linux+ is valid for three years. Renew through CompTIA's Continuing Education program by earning CEUs or passing a higher-level CompTIA exam.
Ready to study?
Start with the free resources above, then add a top-rated course and practice exams when you're ready to test yourself.