LFS101 Notes

Course modules LFS101

Personal study notes from the "Introduction to Linux" (LFS101) course by the Linux Foundation. Search, filter, and work through them in order.

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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.
1 min read
Module 2
Linux Philosophy
Core principles: everything is a file, small single-purpose programs, and the power of the command line.
2 min read
Module 3
Linux Families & Popular Distros
Major distribution families — Red Hat, Debian, SUSE — and choosing the right one for your needs.
4 min read
Module 4
Linux Basics & System Setup
Installation, boot process, filesystem hierarchy, and getting started with your first Linux system.
8 min read
Module 5
Graphical User Interface
Desktop environments like GNOME and KDE, window managers, and navigating the Linux GUI.
2 min read
Module 6
Command Line Operations
Essential shell commands, pipes, redirection, and working efficiently in the terminal.
13 min read
Module 7
Finding Linux Documentation
Man pages, info pages, /usr/share/doc, and online resources for help and reference.
6 min read
Module 8
Processes
Process lifecycle, ps, top, signals, background/foreground jobs, and process management.
14 min read
Module 9
File Operations
File permissions, ownership, links, and advanced file manipulation with cp, mv, rm, and find.
24 min read
Module 10
Text Editors
Working with vim, nano, and emacs — editing configuration files and writing scripts.
10 min read
Module 11
User Environment
Shell variables, environment configuration, aliases, and customizing your login experience.
14 min read
Module 12
Manipulating Text
grep, sed, awk, and other text processing tools for searching and transforming data.
19 min read
Module 13
Network Operations
Network configuration, ssh, scp, DNS, firewalls, and troubleshooting connectivity issues.
19 min read
Module 14
The bash Shell & Basic Scripting
Writing your first scripts — variables, conditionals, loops, and making your work repeatable.
23 min read
Module 15
More On bash Shell Scripting
Advanced scripting: functions, error handling, regular expressions, and real-world automation.
14 min read
Module 16
Printing
CUPS printing system, printer setup, managing print queues, and generating formatted output.
20 min read
Module 17
Local Security Principles
User management, sudo, SELinux, file permissions, and hardening your Linux system.
17 min read
These notes are based on the original "Introduction to Linux" (LFS101) course by the Linux Foundation.