Intermediate CompTIA · Exam XK0-006

CompTIA Linux+ (XK0-006) Study Guide

CompTIA Linux+ is the vendor-neutral Linux administration certification, and the current exam is XK0-006, which launched on 15 July 2025 and replaced XK0-005. It is a working-administrator exam: up to 90 questions in 90 minutes, mixing multiple choice with performance-based tasks that drop you into a shell and expect you to fix something. The domains cover system management, security, scripting and automation, and troubleshooting — weighted toward the work of keeping servers running rather than Linux history or desktop use.

Overview

Level

Intermediate

Vendor

CompTIA

Audience

Systems administrators who already touch Linux and want it on paper, support engineers moving out of Windows-only environments, and cloud or DevOps hopefuls who keep hitting the limit of what they can do without command-line fluency. CompTIA recommends about twelve months of hands-on experience with Linux servers plus A+, Network+ or Server+ level knowledge — not hard prerequisites, but the level the questions assume.

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+ once you can move around a shell without a cheat sheet; it rewards hands-on habit far more than reading. It fits after A+ or Network+ and before or alongside a cloud certification, because nearly everything you provision in AWS or Azure runs Linux underneath. If you are aiming squarely at one cloud, that vendor's associate certification usually opens more doors first — take Linux+ when a job asks for Linux specifically, when you support Linux servers now, or when you want the distribution-agnostic grounding that makes vendor material easier to absorb. XK0-006 is expected to run until roughly 2028.

Exam details

Exam Quick Reference

Exam Code
XK0-006
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
Official exam page Verify current pricing

Renewal: Valid for 3 years. Renew through CompTIA's Continuing Education (CE) program by earning CEUs, or by passing a higher-level CompTIA exam.

Facts on this page last verified September 24, 2026 against official CompTIA sources.

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. 1

    Download the XK0-006 exam objectives

    Get the official Linux+ XK0-006 objectives from CompTIA. The domains span system management, security, scripting/automation, and troubleshooting—use them to structure your study.

  2. 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. 3

    Work through a primary video course

    Choose one comprehensive XK0-006 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. 4

    Read the official study guide

    The Sybex Linux+ Study Guide (XK0-006) by Blum & Bresnahan is the standard written reference. Use it to deepen system management and troubleshooting, which reward detailed command knowledge.

  5. 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. 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. 7

    Take timed practice exams

    Use full-length XK0-006 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. 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

Official Documentation CompTIA Linux+ XK0-006 Exam Objectives (Official)

The official XK0-006 objectives across all domains. Your study roadmap—start here.
Hands-on Labs OverTheWire – Bandit

A free, gamified way to build Linux command-line fluency level by level. Excellent for cementing the terminal skills Linux+ tests.
Tutorial Linux Journey

A free, beginner-friendly walkthrough of Linux fundamentals—filesystem, permissions, processes, networking. Now hosted by LabEx, which promotes its own paid labs around it; the lessons themselves are still free to read. A good companion to a video course.
Reference The Linux Command Line (free book by William Shotts)

A free, comprehensive book on the Linux command line. Deep reference for the shell and scripting topics on the exam.
Community r/CompTIA on Reddit

Active community with Linux+ study advice and recent XK0-006 pass reports. Search the Linux+ flair before posting.

Vouchers & exam cost

Buy Linux+ Exam Voucher – CompTIA Store

CompTIA publishes voucher pricing only inside its own store checkout, so confirm the current price there before buying. Vouchers are often bundled with retake insurance or CertMaster practice.

Frequently asked questions

Is Linux+ still XK0-005?

No. XK0-006 launched on 15 July 2025 and is the current exam — XK0-005 has been retired. The change matters when you buy study material: courses and books written for XK0-005 are still widely listed and still sell, so check the edition before paying for one. XK0-006 is expected to run until roughly 2028.

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 XK0-006 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.

Jobs where Linux+ shows up

7 roles in our Career Navigator list Linux+ as worth having. Each page covers what the job involves day to day, its honest downside, and the typical pay.

Not sure which of these fits you? Take the free Navigator assessment →

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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.

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