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 to reinforce your learning.
About This Course
Introduction to Linux (LFS101) is a free, self-paced course offered by the Linux Foundation. It covers everything you need to get started with Linux — from its history and philosophy to practical command-line skills, file management, networking, scripting, and security.
Whether you're a developer, system administrator, or simply curious about open-source operating systems, this course provides a solid foundation. These notes summarize the key concepts from each module to help you review and retain what you've learned.
What You'll Learn
Navigate the filesystem, manage processes, and use pipes, redirection, and shell scripting.
Understand permissions, ownership, links, and how Linux manages processes and services.
Configure networks, use SSH, manage firewalls, and apply local security principles.
Explore distributions, desktop environments, package management, and the open-source community.
Who Is This For?
- Developers who want to understand the platform their code runs on.
- System Administrators building foundational Linux skills.
- Students studying computer science or IT.
- Anyone curious about Linux and open-source software.
How to Use These Notes
- Enroll in the free LFS101 course on the Linux Foundation website.
- Study each module's official material, then review the corresponding notes here.
- Use your own terminal to practice commands as you learn.
- Mark modules as complete to track your progress — saved automatically in your browser.