Linux Programming: From Zero to Kubernetes & DevOps

A comprehensive, hands-on guide for staff engineers to master Linux internals and map them directly to Kubernetes and DevOps pipelines.

Who This Is For

You're a staff engineer who wants to:

• Deeply understand Linux — not just use it, but know why things work
• Map Linux concepts to Kubernetes — every K8s concept has a Linux foundation
• Build DevOps pipelines with confidence in the underlying OS
• Work across Windows and Linux without friction

Learning Path (Mind Map)

                        ┌─────────────────────┐
                        │   YOU ARE HERE       │
                        │   Staff Engineer     │
                        └─────────┬───────────┘
                                  │
              ┌───────────────────┼───────────────────┐
              ▼                   ▼                   ▼
     ┌────────────────┐  ┌───────────────┐  ┌────────────────┐
     │ PART 1-3       │  │ PART 4        │  │ PART 5         │
     │ Linux Core     │  │ Networking    │  │ Shell/Automate │
     │ FS, Procs,     │  │ from Scratch  │  │ Scripting,     │
     │ Permissions    │  │ TCP/IP, DNS,  │  │ systemd, cron  │
     └───────┬────────┘  │ iptables      │  └───────┬────────┘
             │           └───────┬───────┘          │
             └───────────────────┼──────────────────┘
                                 ▼
                    ┌────────────────────────┐
                    │ PART 6                 │
                    │ Containers & Linux     │
                    │ Internals              │
                    │ namespaces, cgroups,   │
                    │ overlayfs              │
                    └────────────┬───────────┘
                                 │
                    ┌────────────┼────────────┐
                    ▼                         ▼
          ┌──────────────────┐     ┌──────────────────┐
          │ PART 7           │     │ PART 8           │
          │ Kubernetes       │     │ DevOps Pipelines │
          │ Linux ──► K8s    │     │ CI/CD, GitOps,   │
          │ concept mapping  │     │ Monitoring        │
          └──────────────────┘     └──────────────────┘

Documentation Index

#	Guide	What You'll Learn	Key K8s Connection
1	Linux Fundamentals	Kernel, shell, boot process, distros	How K8s nodes boot and run
2	File System & Permissions	Everything is a file, mount, chmod, ACL	PV/PVC, SecurityContext
3	Process Management	PIDs, signals, cgroups, systemd	Pod lifecycle, resource limits
4	Networking from Scratch	TCP/IP, sockets, iptables, DNS, bridges	Services, Ingress, CNI, kube-proxy
5	Shell Scripting & Automation	Bash, pipes, scripting patterns, cron	Init containers, CronJobs, operators
6	Containers & Linux Internals	Namespaces, cgroups, overlayfs, building containers from scratch	Pod sandboxing, container runtimes
7	Linux-to-Kubernetes Mapping	Every K8s concept traced to its Linux root	Full concept mapping
8	DevOps Pipelines	CI/CD, GitOps, monitoring, IaC	Production-grade pipelines

Quick References

Cheat Sheet	Description
Linux Command Cheat Sheet	200+ essential commands organized by category
Networking Cheat Sheet	Ports, protocols, debugging commands
Windows-to-Linux Bridge	Side-by-side command mapping for dual-OS users
Mind Map	Visual learning path with concept connections

Quick Start

# Clone this repo
git clone <this-repo-url>
cd LinuxProgramming

# If you're on Windows, use WSL2
wsl --install -d Ubuntu-22.04

# Start with Part 1
cat docs/01-linux-fundamentals.md

# Run the practice scripts
chmod +x docs/scripts/*.sh
./docs/scripts/01-explore-system.sh

Philosophy

"Every Kubernetes abstraction is a Linux primitive wearing a YAML costume."

This guide doesn't just teach you Linux commands. It teaches you why each concept exists, how it works internally, and where it shows up in Kubernetes and DevOps tooling.