Linux Foundation Certified System Administrator
A practical Linux administration credential covering routine command-line work, filesystems, users, networking, services, storage, and system troubleshooting.
Last verified: 2026-09-01
Overview
Linux Foundation Certified System Administrator (LFCS) validates practical, vendor-neutral Linux system administration skills through a hands-on performance-based exam. Candidates work from the command line to complete real administration tasks across deployment and operations, networking, storage, essential commands, and user and group management. The exam is distribution-agnostic and is intended for administrators who need to demonstrate practical Linux competence rather than only theoretical knowledge.
- Recommended experience
- There are no formal prerequisites. Candidates should have practical command-line Linux experience and be able to perform routine administration involving processes, services, networking, storage, users, permissions, software, security controls, and troubleshooting.
- Estimated study time
- 80–140 hours
- Target job roles
- Linux System AdministratorCloud AdministratorInfrastructure EngineerDevOps EngineerSystems Engineer
Exam Details
Linux Foundation Certified System Administrator Exam
- Exam code
- LFCS
- Number of exams
- 1
- Duration
- 120 minutes
- Question count
- Performance-based tasks; Linux Foundation does not publish a fixed task count
- Delivery method
- Online proctored, performance-based Linux command-line exam
- Price
- $445 USD exam-only price
Skills and Domains
Operations and Deployment
25%Manage kernel parameters, processes, services, jobs, packages, recovery, virtual machines, containers, and SELinux.
Networking
25%Configure and troubleshoot IP networking, SSH, packet filtering, routing, bridges, bonding, proxies, and load balancers.
Storage
20%Manage LVM, filesystems, remote storage, swap, automounting, and storage performance.
Essential Commands
20%Use core administration commands, basic Git operations, service troubleshooting, performance tools, disk-space analysis, and certificates.
Users and Groups
10%Manage local users and groups, environment profiles, limits, ACLs, and directory-backed accounts.
Study Resources
Linux Foundation Certified System Administrator (LFCS)
Official resourceDocumentation · Free
Official LFCS certification page, exam details, domains, and pricing.
View resourceLinux Foundation Certification FAQ
Official resourceDocumentation · Free
Official certification scheduling, eligibility, and policy FAQ.
View resourceRenewal
- Validity period
- 2 years
- Renewal method
- Retake and pass the current LFCS certification exam to maintain a current LFCS credential.
- Notes
- The Linux Foundation currently lists LFCS as valid for two years. Verify the current certification policies in the Linux Foundation portal when approaching expiration.
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