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From zero to production firefighter — master Linux the way support engineers actually use it

Learn Linux through real production incidents. Every command taught in context of an actual scenario. By the end you will handle any Linux incident with confidence.

32 chapters ~404 min total 10 Windows→Linux

Beginner 5 chapters

Vijay's first day without Windows

The mental shift — everything you know mapped to Linux equivalents

👤 Vijay ⏱ 12 min

Vijay learns the filesystem

No C: drive, no backslashes — how Linux organises everything

👤 Vijay ⏱ 11 min

Riya's first production incident

Navigate Linux, read logs, find the problem — the foundation of everything

👤 Riya ⏱ 10 min

Dev hunts the CPU killer

Processes, top, ps, kill — finding and fixing runaway processes

👤 Dev ⏱ 10 min

Vijay installs software without an installer wizard

apt, yum, pip — package management for Windows engineers

👤 Vijay ⏱ 11 min

Intermediate 12 chapters

Vijay manages services without Services.msc

systemctl, journalctl — better than Services.msc once you know how

👤 Vijay ⏱ 12 min

Vijay troubleshoots the network

ip, ss, nc, curl — Linux networking for Windows engineers

👤 Vijay ⏱ 11 min

Vijay tames processes without Task Manager

ps, top, kill, nice — process management for Windows engineers

👤 Vijay ⏱ 11 min

Vijay reads logs without Event Viewer

grep, tail, journalctl — log analysis that is faster than Event Viewer

👤 Vijay ⏱ 12 min

Priya traces the broken connection

Ports, DNS, firewall — diagnosing cannot connect incidents

👤 Priya ⏱ 12 min

Karan saves the disk at midnight

Disk full, systemctl, cron — the three pillars of production maintenance

👤 Karan ⏱ 11 min

Arjun becomes a log wizard

awk, sed, cut, sort, uniq — turn any log file into a data report in seconds

👤 Arjun ⏱ 12 min

Ananya audits who has access to what

Users, groups, permissions, sudo — controlling access on production servers

👤 Ananya ⏱ 13 min

Kiran secures access with SSH keys

SSH key authentication, config shortcuts, tunnelling and remote execution

👤 Kiran ⏱ 12 min

Vijay monitors servers without Datadog

sar, Netdata, Prometheus, Uptime Kuma — free monitoring for Linux servers

👤 Vijay ⏱ 13 min

Priya containerises everything

Docker, Dockerfile, Docker Compose — running apps the modern way

👤 Priya ⏱ 14 min

Arjun automates the boring work

crontab, systemd timers, flock — scheduling jobs that actually run reliably

👤 Arjun ⏱ 12 min

Advanced 11 chapters

Vijay replaces PowerShell with bash

Bash scripting for PowerShell users — same logic, different syntax

👤 Vijay ⏱ 14 min

Vijay handles his first Linux production incident

Full incident response — applying Windows instincts in a Linux world

👤 Vijay ⏱ 14 min

Meena automates the morning checklist

Shell scripting, functions, loops — turn manual work into automation

👤 Meena ⏱ 14 min

Sneha finds the hidden bottleneck

strace, lsof, perf, tcpdump — deep diagnostics for complex incidents

👤 Sneha ⏱ 13 min

Sameer becomes twice as fast

Aliases, history tricks, tmux, watch — terminal productivity patterns that compound

👤 Sameer ⏱ 13 min

Nandini extends the disk at 3am

LVM, partitions, swap, filesystem resize — adding space without downtime

👤 Nandini ⏱ 13 min

Rajan unlocks the kernel's hidden performance

sysctl, ulimits, file descriptors — tuning the OS for high-traffic production

👤 Rajan ⏱ 13 min

Meera builds the backup system nobody questioned

tar, rsync, pg_dump, rclone — backups that actually work when you need them

👤 Meera ⏱ 14 min

Suresh locks down the open server

ufw, firewalld, fail2ban, nmap — network security that takes an afternoon

👤 Suresh ⏱ 13 min

Priya writes the postmortem that prevents the next incident

Timeline reconstruction, 5 whys, action items — turning incidents into improvements

👤 Priya ⏱ 13 min

Kavitha turns a GPU server into an ML platform

nvidia-smi, CUDA, Ollama, Jupyter — running AI models on your own hardware

👤 Kavitha ⏱ 14 min

Expert 4 chapters

3am — all incidents at once

Real war games: app down, CPU spike, disk full, cannot connect

👤 The Team ⏱ 15 min

Deepak runs things in parallel

xargs, parallel execution, advanced scripting — automate work across many servers at once

👤 Deepak ⏱ 13 min

Divya chases the invisible p99

Latency percentiles, iostat, vmstat, strace — measuring what you cannot see

👤 Divya ⏱ 14 min

Dhruv builds the system that never goes down

nginx load balancer, keepalived, PostgreSQL replication — real high availability

👤 Dhruv ⏱ 15 min

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