🐧 Linux for DevOps Engineers

From Fundamentals to Real-World Production Scenarios

Linux is not just an operating system — it’s the foundation of modern infrastructure.

Most production incidents are not solved by new tools.
They are solved by engineers who understand Linux deeply.

This course is designed to teach Linux the way it is actually used in DevOps, SRE, and Cloud Engineering roles.

🎯 Who This Course Is For

This course is for you if:

  • You work in DevOps / SRE / Platform / Cloud Engineering
  • You use Linux daily but feel you lack depth
  • You can run commands, but struggle during incidents
  • You want to understand why things break — not just how to fix them

This course is not for absolute beginners who only want theory.

🧠 How This Course Is Different

Most Linux courses teach commands.

This course teaches decision-making.

You’ll learn:

  • Why certain commands matter during outages
  • How Linux behaves under load and failure
  • How real engineers debug production systems
  • How Linux tools combine to solve real problems

Every lesson is grounded in real-world DevOps scenarios.

📚 Course Structure

The course is organized into modules and lessons, each building on real operational experience.

📦 Module 1: Linux Basics (Foundation)

  • What Linux actually is (and isn’t)
  • Linux distributions in production
  • Understanding the Linux filesystem layout
  • How processes, files, and users fit together

➡️ Goal: Build a strong mental model of Linux.

📦 Module 2: Core Linux Commands

  • Navigating the filesystem (ls, cd, pwd)
  • File operations (cp, mv, rm)
  • Viewing file content (cat, less, head, tail)
  • When not to use certain commands

➡️ Goal: Use commands safely and intentionally.

📦 Module 3: Text Processing & Logs

  • grep for signal extraction
  • sed for safe, repeatable changes
  • awk for data analysis
  • Combining tools for real incident debugging

➡️ Goal: Turn raw logs into answers.

📦 Module 4: Users, Permissions & Security

  • Users and groups
  • File permissions explained clearly
  • chmod, chown in real scenarios
  • Avoiding common permission disasters

➡️ Goal: Understand access, not guess it.

📦 Module 5: Processes & Services

  • Understanding Linux processes
  • ps, top, htop
  • Signals and process lifecycle
  • Managing services with systemctl

➡️ Goal: Debug stuck, slow, or crashing systems.

📦 Module 6: Real-World DevOps Scenarios

  • Disk full incidents
  • Memory and CPU saturation
  • Log explosion and rotation issues
  • Debugging broken applications on Linux

➡️ Goal: Think like an on-call engineer.

🛠 How Lessons Are Structured

Every lesson follows the same clear structure:

  1. Why this topic matters in production
  2. Core concepts (simple and clear)
  3. Commands with real examples
  4. Common mistakes engineers make
  5. Real DevOps / SRE scenarios
  6. Practical takeaways

This keeps learning focused and actionable.

🔓 Access & Updates

  • This course is currently free
  • Content is added incrementally
  • Lessons evolve as real-world practices change

Later, advanced sections may require signup — but foundational Linux will remain open.

🚀 Start Learning

Begin with the first module:

👉 Module 1: Linux Basics

Learn Linux not as a checklist of commands —
but as the system running your production workloads.

📩 Stay Updated

New lessons and real-world case studies are added regularly.

👉 Subscribe to rebash to get updates when new modules are published.

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