Free Linux & Command Line Course — Terminal, Bash & SSH
Learn Linux free — navigate the filesystem, manage files, permissions (chmod), pipes & grep, processes, package management, shell scripting and SSH. Essential for developer, data, DevOps and cybersecurity careers, with real commands and practice.
TL;DR: Learn Linux free — navigate the filesystem, manage files, permissions (chmod), pipes & grep, processes, package management, shell scripting and SSH. E…
Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated
Free Linux course: 10 lessons, from the basics through to the advanced topics interviewers actually ask about. Every lesson is free, needs no sign-up, and runs in your browser with an editor and instant AI feedback.
Linux Course Syllabus — 10 Lessons
Work through them in order, or jump to the topic you need. 10 lessons include worked explanations and runnable examples.
Introduction
- Why Linux & the Shell? — Linux is a free, open-source operating system that powers servers, supercomputers, smartphones (Android), and embedded devices worldwide.
Filesystem
- Navigating the Filesystem — Linux filesystems are organized in a tree structure starting from the root directory (/).
- Working with Files & Directories — Creating and managing files/folders is fundamental.
Text Processing
- Viewing & Editing Text Files — cat displays entire file contents (good for small files).
- Pipes, Redirection & grep — Redirection allows you to send output to files or read input from them.
Security
- Permissions & Ownership — Every file has permissions controlling who can read (r=4), write (w=2), or execute (x=1) it.
System
- Processes & System Resources — Processes are running programs. ps lists processes; ps aux shows all processes with detailed info (user, CPU, memory).
System Administration
- Package Management & sudo — sudo (substitute user, do) runs commands with elevated privileges (as root/superuser).
Scripting
- Shell Scripting Basics — A shell script is a text file containing shell commands executed sequentially.
Advanced
- SSH, Tips & Mini Project — SSH (Secure Shell) allows secure remote access to servers.
Who this Linux course is for
School and college students in India starting from zero, and anyone revising Linux for placements, board practicals or a project. There is no prerequisite beyond being able to type — the first lessons assume no programming background at all.
How to study this course
- Read the lesson, then run the example in the built-in editor before moving on — reading code is not the same as writing it.
- Try the practice task at the end of each lesson. Getting it wrong and fixing it is where the learning happens.
- When you are stuck, ask the free AI Tutor to explain that specific line rather than skipping ahead.
🤖 Stuck on any of these? Ask Syllab's free AI Tutor to explain step by step →