Introduction to Linux LFS101 Notes

Personal study notes from the "Introduction to Linux" (LFS101) course by the Linux Foundation. Use these notes alongside the official course material.

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Module 1

Linux History Overview

The origins of Linux, from Unix and Minix to Linus Torvalds' kernel and the open-source movement.

Module 2

Linux Philosophy

Core principles: everything is a file, small single-purpose programs, and the power of the command line.

Module 3

Linux Families & Popular Distros

Major distribution families — Red Hat, Debian, SUSE — and choosing the right one for your needs.

Module 4

Linux Basics & System Setup

Installation, boot process, filesystem hierarchy, and getting started with your first Linux system.

Module 5

Graphical User Interface

Desktop environments like GNOME and KDE, window managers, and navigating the Linux GUI.

Module 6

Command Line Operations

Essential shell commands, pipes, redirection, and working efficiently in the terminal.

Module 7

Finding Linux Documentation

Man pages, info pages, /usr/share/doc, and online resources for help and reference.

Module 8

Processes

Process lifecycle, ps, top, signals, background/foreground jobs, and process management.

Module 9

File Operations

File permissions, ownership, links, and advanced file manipulation with cp, mv, rm, and find.

Module 10

Text Editors

Working with vim, nano, and emacs — editing configuration files and writing scripts.

Module 11

User Environment

Shell variables, environment configuration, aliases, and customizing your login experience.

Module 12

Manipulating Text

grep, sed, awk, and other text processing tools for searching and transforming data.

Module 13

Network Operations

Network configuration, ssh, scp, DNS, firewalls, and troubleshooting connectivity issues.

Module 14

The bash Shell & Basic Scripting

Writing your first scripts — variables, conditionals, loops, and making your work repeatable.

Module 15