Linux – The Final Boss: Day-wise Curriculum

Welcome to the ultimate Linux learning series designed for aspiring DevOps, SRE, System, and Cloud Engineers! This curriculum is structured day-wise, with notes, exercises, solutions, and a mega project at the end.

Curriculum Overview

| Day | Topic | Notes & Exercises | |------|------------------------------------------------------------|--------------------| | 0 | Introduction & Course Goals | Day 00 | | 1 | What is Linux? Kernel, Distributions, and Ecosystem | Day 01 | | 2 | Virtualization & Setting Up Linux (VM, WSL, Cloud) | Day 02 | | 3 | Linux Folder Structure & File Types | Day 03 | | 4 | Linux Boot Process & Service Management | Day 04 | | 5 | Basic Linux Commands for DevOps Engineers | Day 05 | | 6 | Advanced Linux Commands (grep, awk, sed, find, xargs, etc.)| Day 06 | | 7 | Users, Groups & Permissions | Day 07 | | 8 | File Management & Editors (nano, vi/vim) | Day 08 | | 9 | File Transfer (SCP, SFTP, rsync, FTP, NFS, Samba) | Day 09 | | 10 | Environment Variables, Aliases & Shell Customization | Day 10 | | 11 | Pipes, Redirects, Wildcards, and Links | Day 11 | | 12 | Compression, Archiving, and Backups | Day 12 | | 13 | Process Management & Scheduling (cron, at, anacron) | Day 13 | | 14 | System Monitoring & Log Management | Day 14 | | 15 | Networking & Troubleshooting | Day 15 | | 16 | Security, Firewalls & Hardening | Day 16 | | 17 | Package Management (apt, yum, dnf, rpm) | Day 17 | | 18 | Web Servers (Apache, Nginx, Reverse Proxy) | Day 18 | | 19 | Advanced Linux Storage & Filesystems (ext4, xfs, btrfs, quotas, tuning) | Day 19 | | 20 | Basic Shell Scripting | Day 20 | | 21 | Volume Management (LVM, RAID, Snapshots, Resizing) | Day 21 | | 22 | Certificate Management (SSL/TLS, OpenSSL, Certbot) | Day 22 | | 23 | Linux Interview Questions & Real-World Scenarios | Day 23 | | 24 | System Updates & Patching | Day 24 | | 25 | System Hardening | Day 25 | | 26 | Mega Project: End-to-End DevOps/Linux Challenge | Day 26 |

Each day has its own folder with:

• Notes
• Sample exercises
• Step-by-step solutions

How to Use

• Start with Day 0 and progress sequentially.
• Complete exercises and review solutions.
• Attempt the Mega Project at the end to consolidate your learning.

Advanced Track (Optional)

These advanced Linux topics extend the core 26-day curriculum. Use them to deepen expertise for senior DevOps, SRE, and Cloud roles. Your original chapters remain unchanged; this is an optional add-on.

| Day | Topic | Notes & Exercises | |------|------------------------------------------------------------|--------------------| | 27 | Linux Performance Tuning & Optimization (CPU, Memory, I/O, sysctl) | Day 27 | | 28 | Linux Containers & Namespaces Internals (namespaces, cgroups, capabilities) | Day 28 | | 29 | Advanced Monitoring & Observability (logs, metrics, traces) | Day 29 | | 30 | Advanced Security Hardening & Compliance (SELinux/AppArmor, auditd, CIS/STIG) | Day 30 | | 31 | Advanced Troubleshooting & Kernel Interaction (strace, perf, eBPF basics) | Day 31 |

Each advanced day includes:

• Notes focused on production scenarios
• Hands-on labs and command examples
• Interview-style questions and answers