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Linux

Everything you need to get good at Linux

Roadmaps, modules, concepts, articles, cheatsheets, and practical resources — all aggregated in one place.

Concepts4 Concepts

The main ideas and theoretical pillars that explain how things work under the hood.

Topics17 Topics

Specific subtopics, terminologies, and detailed deep-dive guides for this technology.

Modules3 Modules

Step-by-step practical lessons with hands-on labs to build your real-world skills.

Roadmaps3 Roadmaps

Structured guide pathways to lead you from absolute beginner to advanced developer.

Articles1 Article

In-depth technical guides and engineering notes.

Resources1 Resource

Official links, extra documentation, and learning tools to help you practice.

EXPLORE
Concepts4Topics17

Knowledge Graph

Browse Concepts

The foundational building blocks. Dive deep into theory and technical concepts to explore detailed subtopics, terminologies, and glossaries mapped inside each concept.

4 topics

Linux Fundamentals and File System

Complete overview mapping DevOps concepts for Linux Fundamentals and File System.

Explore

Knowledge Map

Browse Topics

Detailed subtopics, terminologies, and technical guides. Dive straight into specific lessons and workflows mapped inside each concept.

All Topics

Configuring Linux Environment — Variables, PATH, Dotfiles, and Shell Startup

Master Linux environment variables, PATH management, dotfile configuration, shell startup file ordering, and direnv for consistent production and development environments.

Explore

Curriculum

Learning Modules

Hands-on, topic-by-topic modules that walk you through real tools and workflows. Each module breaks down a complex concept into structured lessons you can complete at your own pace.

BEGINNER23 Topics
Standalone

Linux for Devops

Learn Linux for DevOps from scratch - file system, permissions, processes, bash scripting, and production server management.

Start

Career Blueprints

Learning Roadmaps

Step-by-step career blueprints that show you exactly what to learn and in what order. Follow a roadmap from absolute beginner to confident, job-ready engineer without the guesswork.

12 Steps

DevOps Roadmap

Dive into a complete beginner-friendly roadmap spanning local Linux foundations, version control, build streams, pipeline automation and cloud deployments securely.

Start Pathway

Guides

Articles

In-depth technical guides, architecture breakdowns, and best practices written by engineers who have used these tools in real production environments — not just tutorials, but actual engineering insight.

Guide5 min read

How to Troubleshoot a Linux Production Server: A Systematic Approach

The exact sequence of Linux commands to run when a production server is degraded — CPU, memory, disk, network, logs, and real incident examples.

Read Article

Quick Lookups

Cheatsheets

Compact, well-organized reference sheets for commands, flags, syntax, and configurations. Built for speed — open one alongside your terminal and get the answer in seconds without breaking your flow.

Cheatsheet

Linux Commands for DevOps Engineers

The complete Linux command reference for DevOps engineers — file system, processes, networking, SSH, systemd, and bash one-liners for production.

Open Sheet

Learning Assets

Practical Resources

A curated collection of official documentation, open-source repositories, video references, and productivity tools — everything hand-picked so you always have the right resource at the right moment.

VIDEO

Linux by Abhishek

A complete Linux playlist covering everything from basics to advanced topics, including commands, file systems, permissions, shell scripting, and real-world usage.

Open

Ready to test yourself?

Validate your technical understanding and check your scores, or explore the full platform learning roadmap.

Take the Quiz
Full Roadmap
Modules
3
Roadmaps3
Articles1
Cheatsheets3
Resources1
Quiz🎯
4 topics

Linux Networking and Security

Complete overview mapping DevOps concepts for Linux Networking and Security.

Explore
4 topics

Linux Process and System Management

Complete overview mapping DevOps concepts for Linux Process and System Management.

Explore
5 topics

Linux Shell Scripting and Automation

Complete overview mapping DevOps concepts for Linux Shell Scripting and Automation.

Explore

Configuring Linux Firewalls with iptables and ufw

Configure production Linux firewalls using iptables and ufw — implement default-deny rules, protect SSH, handle Docker port exposure, and persist rules across reboots.

Explore

Configuring SSH for Secure Production Server Access

Master SSH key pair generation, ~/.ssh/config setup, bastion host access, port forwarding, and production sshd hardening for secure Linux server management.

Explore

Hardening Linux Servers for Production — Security Baseline Checklist

Apply a production security hardening baseline to Linux servers covering SSH, users, packages, kernel parameters, fail2ban, and automated compliance scanning with lynis.

Explore

Linux File Permissions and Ownership — chmod, chown, umask, and ACLs

Understand the Unix permission model and manage file permissions and ownership on production Linux servers using chmod, chown, and ACLs.

Explore

Linux File System and Navigation — FHS, Paths, and Essential Commands

Master Linux filesystem hierarchy, absolute and relative paths, and the navigation commands used on every production server.

Explore

Linux Package Management — apt, yum, dnf, and Repositories

Manage software installation, updates, and removal across Debian and RedHat Linux distributions using apt, yum, and dnf in production environments.

Explore

Linux Users, Groups, and sudo — Access Control on Production Servers

Manage Linux users, groups, and sudo access to enforce least-privilege access control on production servers shared across engineering teams.

Explore
BEGINNER17 Topics
Standalone

Shell Scripting

Learn shell scripting and Bash for DevOps - write production scripts, automate tasks, handle errors, and schedule with cron.

Start
BEGINNER
Standalone

Set Up and Secure a Linux Server on AWS EC2 from Scratch

Launch an AWS EC2 Ubuntu server, configure SSH security, set up a firewall, create user accounts, and deploy a web application with Nginx as a reverse proxy.

Start
17 Steps

AIOps Engineering Mastery

Master AI-powered IT operations from Linux fundamentals to autonomous AI agents that detect, diagnose, and self-heal production systems at enterprise scale.

Start Pathway
13 Steps

DevSecOps Mastery Path

From zero to production-grade DevSecOps engineer - master every security tool, pipeline control, and cloud hardening skill the industry demands in 2026.

Start Pathway
Cheatsheet

Bash - Scripting Quick Reference

Practical Bash scripting reference — variables, conditionals, loops, functions, arrays, and error handling for real automation scripts.

Open Sheet
Cheatsheet

Linux - Command Quick Reference

Essential Linux command reference - filesystem, permissions, process management, disk usage, networking, and systemd for daily server work.

Open Sheet