🐧 Linux for DevOps

Linux is the foundation of modern DevOps.

Almost every cloud server, Kubernetes node, Docker container, and CI/CD runner runs Linux.

Understanding Linux is one of the most important skills for every DevOps engineer.

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📚 Topics Covered

Topic	Description
Filesystem	Linux directory structure
File Management	Create, copy, move, delete files
Permissions	chmod, chown, chgrp
Users & Groups	User management
Process Management	ps, top, kill, jobs
Networking	ping, curl, ssh, netstat, ip
Text Processing	grep, awk, sed, cut
Shell Environment	PATH, variables
Package Management	apt, yum, dnf

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Learning Flow

flowchart TD

Filesystem --> Commands
Commands --> Permissions
Permissions --> Users
Users --> Processes
Processes --> Networking
Networking --> Shell
Shell --> Automation

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Prerequisites

• Basic Computer Knowledge
• Terminal Access
• Ubuntu / Debian / macOS

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Goal

After completing this section you should be able to

• Navigate Linux confidently
• Manage files
• Understand permissions
• Troubleshoot services
• Debug networking issues
• Write basic automation scriptsDevOps Master Course

Module 1

Linux

✔ Introduction ✔ Filesystem ✔ Navigation ✔ File Management ✔ Search ✔ Text Processing ✔ Permissions ✔ Users & Groups ✔ Process Management ✔ Networking ✔ Package Management ✔ Cron ✔ SSH

Module 2

Shell Scripting

✔ Basics ✔ Variables ✔ Operators ✔ Input Output ✔ Conditions ✔ Loops ✔ Functions ✔ Arrays ✔ Script Arguments ✔ Debugging ✔ Real-world Scripts

Module 3

Git & GitHub

✔ Git Basics ✔ Repository ✔ Branching ✔ Merge ✔ Rebase ✔ Cherry Pick ✔ Stash ✔ GitHub Workflow ✔ Pull Requests ✔ GitHub Actions

Module 4

Docker

...

Module 5

Kubernetes

...

Module 6

AWS

✔ IAM ✔ EC2 ✔ Security Groups ✔ VPC ✔ EBS ✔ ELB ✔ Auto Scaling ✔ S3 ✔ CloudWatch ✔ Route53

Module 7

Terraform

...

Module 8

Jenkins

...

Module 9

Monitoring

✔ Prometheus ✔ Grafana

Module 10

SRE

✔ Incident Management ✔ SLA ✔ SLO ✔ SLI ✔ On-call ✔ Alerting ✔ Reliability