Linux
What skills does a Linux administrator need?
Comfort at the command line, then the operational skills to run a server
Everything in Linux starts with the shell — navigating the filesystem, editing files, managing permissions, and stringing commands together with pipes and redirects. This is non-negotiable groundwork, whether the end goal is DevOps, backend development, or systems administration.
From there, real work means keeping a server healthy: process and service management, package management, disks and filesystems, and reading logs to figure out what went wrong. Anyone touching production also needs a working grasp of networking — how traffic reaches a box and how to troubleshoot when it doesn't.
Increasingly, Linux skills also feed straight into containerization — cgroups, namespaces, and Docker sit directly on top of the same process and filesystem primitives covered earlier in this roadmap.
Choosing a Distro
Package management differs, the fundamentals below don't
Ubuntu Server
apt-based, the largest community and the most documentation — the easiest starting point.
Debian
apt-based, what Ubuntu is built on — slower-moving and favored for stability on real servers.
RHEL / Rocky Linux
dnf-based, what the CompTIA Linux+ and LPIC exams lean on — the standard in enterprise environments.
Arch Linux
pacman-based, minimal and rolling-release — best once the fundamentals are solid and you want to understand every layer.
Getting Linux Running
You don't need a spare machine to start practicing
The lowest-friction option is a virtual machine (VirtualBox or VMware, both free) — install a distro inside your existing OS with no risk to your main system. For anyone on Windows 10/11, WSL gets a real Ubuntu shell running in minutes without a VM at all.
When you want something closer to production, a cloud VPS (DigitalOcean, Linode, AWS Lightsail — all have cheap or free-tier options) puts you on a real server reachable over SSH, which is the environment steps 9-11 of this roadmap assume.
Dual-booting or installing on spare hardware is the least forgiving option and not necessary to work through this roadmap — save it for once you're comfortable and want a daily-driver setup.
The Linux Roadmap
Pick a level — each one includes everything from the levels before it
Steps 1 – 4: get comfortable at the command line
Navigation Basics
Move around the filesystem and manage files from the command line.
Shell & Other Basics
How the shell finds programs, reads config, and moves data around.
Working with Files
Permissions, archives, and the difference between a copy and a link.
Text Processing
The classic Unix toolkit for slicing, filtering, and reshaping text.
Process Management
Find, control, and prioritize whatever is running on the system.
User & Service Management
Manage who can access the system, and what runs on it long-term.
Package Management
Install, update, and remove software the way each distro expects.
Disks, Filesystems & Booting
How storage is laid out, mounted, and made available at boot.
Networking & Troubleshooting
How a Linux box talks to the network, and how to debug it when it doesn't.
Shell Programming & Containerization
Automate repetitive tasks, then see how containers build on the same primitives.
The Art of Command Line
Work through this widely-used reference on the command line, trying each technique in your own terminal — a solid rehearsal for steps 1 through 4.
Monitor a Real Server
Install this real-time monitoring tool on a VM or spare box and use it to observe processes, memory, and disk usage as you exercise the system.
Bash Handbook
Read through this guide to modern Bash, then write a handful of small scripts of your own — loops, conditionals, and functions included.
Docker Labs
Work through Docker's own hands-on tutorials to see how containers, cgroups, and namespaces build directly on Linux process fundamentals.
XK0-005: CompTIA Linux+
A vendor-neutral, entry-level certification that validates the command-line, permissions, and file-management skills covered in steps 1 – 4.
Learn moreLPIC-1: Linux Administrator
Linux Professional Institute's junior-level certification (exams 101 and 102), covering hands-on process, user, service, and package administration from steps 1 – 8.
Learn moreLPIC-2: Linux Engineer
The advanced Linux Professional Institute track — storage, networking, and automation across the full roadmap, steps 1 – 11.
Learn moreCommunity & Support
Where to ask when a step doesn't click
Linux.org Forums
General, beginner-friendly discussion — active threads on distro choice, installs, and troubleshooting.
Unix & Linux Stack Exchange
Best for specific, well-defined technical questions with searchable, vetted answers.
r/linux4noobs
Casual, judgment-free Q&A aimed squarely at people early in this roadmap.
LPI Community
LPI's official groups for connecting with other members working toward the LPIC certifications this roadmap targets.
Frequently Asked Questions
Common questions from people starting out with Linux
Is Linux hard to learn?
The basics — navigating folders, editing a file, running a command — are picked up quickly. What takes longer is building the intuition for how processes, permissions, and services fit together, which mostly comes from spending real time at the terminal rather than reading alone.
Does it matter which distro I learn on?
Not much for the fundamentals — navigation, permissions, and text processing work the same everywhere. The main differences show up in package management (apt vs. dnf vs. pacman) and service defaults, which are easy to pick up once the underlying concepts are solid.
Do I need Linux for DevOps?
Yes, effectively. Most servers, CI/CD runners, and containers run Linux under the hood, so comfort with the shell, process management, and networking covered in this roadmap is assumed groundwork before moving on to Docker, Kubernetes, or cloud platforms.
What's the difference between Bash and other shells?
Bash is the most common default shell and a reasonable one to learn first, but alternatives like zsh and fish offer nicer interactive features (better completion, prompts). Scripts, however, are still overwhelmingly written for Bash or POSIX sh, since those are guaranteed to be available.
How do I prepare for a Linux or sysadmin interview?
Be fluent with file permissions, process management, and text processing tools like grep and awk, understand how systemd manages services, know the basics of networking and troubleshooting commands, and be ready to talk through diagnosing a slow or unresponsive server step by step.
Track complete
From navigating the filesystem to managing services and containers — that's the core of what employers expect from anyone working on Linux systems. Keep practicing at the terminal, and let networking and containerization pull you toward DevOps and infrastructure work.
Related Roadmaps
Where Linux skills lead next
DevOps Roadmap
CI/CD, infrastructure, and automation built on top of Linux.
Docker Roadmap
Containerize applications using the primitives covered in step 11.
Kubernetes Roadmap
Orchestrate containers at scale across a cluster of Linux hosts.
Backend Roadmap
APIs and services that ultimately run and get deployed on Linux.
Network Engineer Roadmap
Go deeper on the networking concepts introduced in step 10.
Shell / Bash Roadmap
Focus in on scripting after covering the fundamentals here.
Where next?
Keep exploring by domain or drill into a single skill