XK0-006 · ● Active · Associate · CompTIA
Current certification (May 2026). Launched July 15, 2025, replacing XK0-005 (V7, retired Jan 13, 2026). V8 adds automation tools (Ansible, Puppet), Python scripting, Git version control, and AI best practices.
Exam facts
| Field | Value |
|---|---|
| Cost | USD $369 (retail; vouchers ~30% discount via Pearson VUE) |
| Duration | 90 minutes |
| Questions | Maximum 90 (multiple-choice + performance-based) |
| Passing | 720 / 900 scaled |
| Format | Multiple choice + performance-based labs |
| Delivery | Pearson VUE (on-site) or OnVUE (remote proctored) |
| Languages | English (Japanese, Portuguese, Spanish coming) |
| Valid | 3 years from passing |
| Renewal | Continuing Education (CE) credits or retake |
| Prerequisites | CompTIA A+ / Network+ / Security+ recommended; 12 months hands-on Linux experience |
| Released | July 15, 2025 (V8) |
| Retiring | ~July 2028 (estimated 3-year lifecycle) |
Vendor source — CompTIA Linux+ (Current) ↗ Official exam guide — XK0-006 Exam Objectives ↗ Exam objectives — V8 Blueprint ↗
About
CompTIA Linux+ (XK0-006, V8) is the current vendor-neutral Linux system administration certification, launched July 2025. It builds on the XK0-005 foundation with expanded automation (Ansible, Puppet), Python scripting, Git version control, and AI/ML best practices—aligning with modern DevOps, cloud-native, and infrastructure-as-code roles. Entry-to-intermediate level, targeting career progression from help desk to junior sysadmin and early DevOps roles.
Domain context — Systems / OS
Foundational operating-system administration and configuration. Linux dominates cloud infrastructure, containers, and servers globally. XK0-006 validates hands-on system administration while introducing modern infrastructure automation.
Read full deep dive — Systems / OS Domain →
Topics covered
Domain 1: System Management & Maintenance (28%)
- Linux installation, initial configuration, kernel management
- Filesystem management (ext4, XFS, Btrfs, LVM, partitioning, mounting)
- File permissions, ownership, ACLs, special bits (setuid/setgid/sticky)
- User and group management (useradd, usermod, groupadd, sudoers, PAM)
- Package management (apt/apt-get, dnf/yum, zypper, flatpak)
- Software repositories, dependency resolution, security updates
- Systemd service management, unit files, dependencies
- Process management, monitoring (systemctl, journalctl, cron, at)
- System logging (rsyslog, journalctl, log rotation, remote logging)
- Performance tuning (CPU, memory, I/O, network bottleneck analysis)
Domain 2: Security & Hardening (25%)
- SELinux and AppArmor (modes, contexts, profiles, enforcing/audit)
- Firewall implementation (firewalld, nftables, ufw, iptables legacy awareness)
- Network security tools (ss, netstat, tcpdump, SSH tunneling)
- SSH hardening (key-based auth, agent forwarding, config lockdown)
- SSL/TLS, certificate management, encryption fundamentals
- File integrity monitoring (aide, auditd basics)
- Access control (sudoers, RBAC, capability-based security)
- Secure remote administration practices, VPN tunneling
Domain 3: Scripting, Containers, and Automation (22%)
- Bash scripting (variables, arrays, functions, error handling, debugging)
- Text processing (grep, sed, awk, cut, sort, uniq, xargs)
- Regular expressions (POSIX BRE/ERE, extended patterns)
- Python scripting fundamentals (sys admin tasks, file I/O, scripting)
- Git version control (init, clone, add, commit, push, pull, branching, merging)
- Container basics (Docker pull/run, Dockerfile, docker-compose concepts)
- NEW (V8): Ansible playbooks and ad-hoc commands for automation
- NEW (V8): Puppet DSL basics and resource types
- Infrastructure as Code (Terraform, Ansible in depth)
- CI/CD pipeline concepts, cron/systemd timers
Domain 4: Troubleshooting & Problem Solving (25%)
- System performance analysis, bottleneck diagnosis, tuning
- Log analysis and filtering (journalctl, grep, awk, structured logging)
- Filesystem troubleshooting (fsck, badblocks, df, du, inode issues, quota)
- Boot process troubleshooting, GRUB2 recovery, initramfs
- Network troubleshooting (connectivity, routing, DNS, firewall, interface config)
- Service and daemon troubleshooting (systemd dependencies, unit failures)
- Hardware diagnostics, device driver issues, module loading
- Application troubleshooting (strace, ltrace, ldd, core dumps)
- NEW (V8): Troubleshooting automation playbooks and scripting errors
Source: Official XK0-006 Blueprint ↗
Common skills at Systems / OS · Associate
Shared competencies at the Associate level in Systems / OS — not specific to this cert.
- Linux CLI proficiency and shell command literacy
- File system structure, permissions, and ownership management
- User and group provisioning across distributions
- Package management and software repository concepts
- Systemd service management and unit file authoring
- Bash scripting fundamentals and debugging
- Network configuration (static IP, DHCP, DNS, routing, VLANs)
- Log file analysis and system troubleshooting via logs
- SSH hardening and key-based authentication
- Performance monitoring and bottleneck identification
- Basic Ansible playbook reading and execution
Recommended courses at Systems / OS · Associate
| Provider | Title | Cost | URL |
|---|---|---|---|
| Udemy (Jason Dion) | CompTIA Linux+ (XK0-006) Complete Course & Exam | $12–$119 | ↗ |
| Udemy (Sander van Vugt) | CompTIA Linux+ XK0-006 Training Course | $12–$99 | ↗ |
| Linux Foundation (edX) | Introduction to Linux (LFS101) | Free | ↗ |
| Pluralsight / A Cloud Guru | CompTIA Linux+ XK0-006 Path | $49–$299 | ↗ |
| CBT Nuggets | CompTIA Linux+ (XK0-006) | $499/year subscription | ↗ |
| KodeKloud | CompTIA Linux+ (XK0-006) Bootcamp | $49–$199 | ↗ |
| YouTube (Learn Linux TV) | CompTIA Linux+ XK0-006 Playlist | Free | ↗ |
| YouTube (NetworkChuck) | Linux & Networking (Updated) | Free | ↗ |
Course-selection rule: Prioritize courses explicitly labeled XK0-006 / V8. XK0-005 materials cover ~90% of content; new topics (Ansible, Python scripting, modern tooling) require V8-specific training.
Practice exams
| Provider | Title | Cost | URL |
|---|---|---|---|
| CompTIA CertMaster | CertMaster Learn + Practice (XK0-006) | $85–$130 | ↗ |
| Udemy (Jason Dion) | CompTIA Linux+ Practice Exams (XK0-006) | $12–$50 | ↗ |
| MeasureUp | Official CompTIA Partner Practice Exams (V8) | $150 | ↗ |
| Whizlabs | CompTIA Linux+ XK0-006 Practice Tests | $40–$80 | ↗ |
Books
| Title | Author | Publisher | Year | ISBN | URL |
|---|---|---|---|---|---|
| CompTIA Linux+ Certification Kit: Exam XK0-006 | TBD (2026 edition pending) | Sybex | 2026 | TBD | ↗ |
| How Linux Works: What Every Superuser Should Know | Ward, Brian | No Starch Press | 2014 | 9781593275678 | ↗ |
| The Linux Command Line: A Complete Introduction | Shotts, William E. Jr. | No Starch Press | 2019 | 9781593279523 | ↗ |
| Bash Pocket Reference | Robbins, Arnold | O'Reilly | 2016 | 9781491941591 | ↗ |
| Ansible for DevOps | Geerling, Jeff | Pragmatic Bookshelf | 2020 | 9781491915608 | ↗ |
| Linux Administration Handbook | Nemeth, Snyder, Hein, Whaley | Pearson | 2018 | 9780134277554 | ↗ |
Book rule: Official Sybex XK0-006 study guide pending 2026 publication. Foundational titles (Ward, Shotts) remain essential. Ansible book added for V8 automation focus.
Typical job titles at Systems / OS · Associate
Junior Linux System Administrator · Linux Engineer · Systems Engineer · IT Operations Specialist (Linux Focus) · Junior DevOps Engineer · Junior Site Reliability Engineer (SRE) · Infrastructure Technician · Junior Infrastructure Automation Engineer
Salary
| Region | Range | Source |
|---|---|---|
| USD | $93,000–$136,000 (junior roles; varies by experience, location, second certs, automation skills) | Glassdoor ↗ · ZipRecruiter ↗ · PayScale ↗ |
| GBP | £28,000–£38,000 (entry); £40,000–£55,000 (mid-career, 3–5 yrs) | Indeed UK ↗ |
| ZAR | R280,000–R420,000 (junior); R450,000–R650,000 (mid-career) | CareerJunction SA ↗ · PayScale ZA ↗ |
| AUD | A$70,000–A$120,000 (mid-career) | Indeed AU ↗ |
Premium factors: Automation skills (Ansible, Terraform, Python scripting), cloud platforms (AWS, Azure, GCP), containers (Docker, Kubernetes basics), second cert (RHCSA, AWS, Azure admin).
Skills validated
Cert-specific technologies validated by XK0-006.
- Linux system installation, configuration, kernel management
- Filesystem management (ext4, XFS, Btrfs, LVM, RAID, quotas)
- User/group management and sudo privilege escalation
- Package management across distributions (apt, dnf/yum, zypper, flatpak)
- Systemd service and daemon management, unit file authoring
- Process monitoring, performance tuning (CPU, memory, I/O, network)
- Bash scripting (variables, functions, loops, error handling, debugging)
- NEW: Python scripting for sysadmin tasks (file I/O, automation, sys calls)
- Text processing (grep, sed, awk, cut, sort, uniq, xargs)
- Regular expressions (POSIX BRE/ERE, extended patterns)
- SELinux and AppArmor configuration and troubleshooting
- Firewall implementation (firewalld, nftables, ufw)
- SSH hardening and key-based authentication
- Network troubleshooting and configuration
- Log analysis (journalctl, rsyslog, structured logging)
- NEW: Ansible playbooks and ad-hoc commands for automation
- NEW: Puppet DSL basics for configuration management
- NEW: Git version control (init, clone, add, commit, push, pull, branching)
- Container fundamentals (Docker pull/run, Dockerfile, docker-compose)
- Boot recovery, GRUB2, filesystem troubleshooting
- Infrastructure as Code concepts (Terraform, Ansible, modern practices)
- Hands-on problem-solving under exam time pressure
Related certifications
- Predecessor: CompTIA Linux+ XK0-005 (V7, Retired Jan 2026) ↗
- Stacks with: CompTIA A+ ↗ · CompTIA Network+ ↗ · CompTIA Security+ ↗
- Prerequisite for: Red Hat RHCSA (EX200) ↗ · Linux Foundation LFCS ↗ · Kubernetes CKA ↗ · Ansible Automation Platform Certification ↗
- Equivalents at this level: LPI LPIC-1 ↗ · Red Hat RHCSA (EX200) ↗
- Vendor overview: CompTIA ↗
Sources
- CompTIA official: Linux+ Certifications (Current) ↗ · XK0-006 Exam Objectives ↗ · Continuing Education ↗
- Launch & updates: XK0-006 V8 Launch (July 2025) ↗ · XK0-005 Retirement Notice ↗
- Pearson VUE: Exam delivery & scheduling ↗ · OnVUE remote proctoring ↗
- Training & practice: Jason Dion Udemy ↗ · CertMaster ↗ · Linux Foundation LFS101 (edX) ↗ · TryHackMe ↗
- Salary & market data: Glassdoor ↗ · ZipRecruiter ↗ · PayScale ↗
Last verified: May 1, 2026 Status: Active (launched July 15, 2025, current as of May 2026). Estimated retirement ~July 2028. Parent domain: Systems / OS Domain → Vendor overview: CompTIA →