Linux Journey - Learn Linux fundamentals through interactive lessons.

A structured learning path from beginner to advanced Linux administration with three levels:

• Grasshopper - Learn the basics
• Journeyman - System internals
• Networking Nomad - Network administration

The repository is organized as follows:

├── i18n/          # Language files
├── lessons/       # Course content by language
│   ├── en/        # English lessons
│   ├── zh/        # Chinese lessons
│   └── ...        # Other languages
└── README.md

What is Linux? Get started with choosing a distribution and installation.

• Linux History
• Choosing a Linux Distribution
• Debian
• Red Hat Enterprise Linux
• Ubuntu
• Fedora
• Linux Mint
• Gentoo
• Arch Linux
• openSUSE

Learn the fundamentals of the command line, navigating files, directories, and more.

• The Shell
• pwd (Print Working Directory)
• cd (Change Directory)
• ls (List Directories)
• touch
• file
• cat
• less
• history
• cp (Copy)
• mv (Move)
• mkdir (Make Directory)
• rm (Remove)
• find
• help
• man
• whatis
• alias
• exit

Learn basic text manipulation and navigation.

• stdout (Standard Out)
• stdin (Standard In)
• stderr (Standard Error)
• pipe and tee
• env (Environment)
• cut
• paste
• head
• tail
• expand and unexpand
• join and split
• sort
• tr (Translate)
• uniq (Unique)
• wc and nl
• grep

Navigate text like a Linux spider monkey with Vim and Emacs.

• regex (Regular Expressions)
• Text Editors
• Vim (Vi Improved)
• Vim Search Patterns
• Vim Navigation
• Vim Inserting and Appending Text
• Vim Editing
• Vim Saving and Exiting
• Emacs
• Emacs Manipulate Files
• Emacs Buffer Navigation
• Emacs Editing
• Emacs Exiting and Help

Learn about user roles and management.

• Users and Groups
• root
• /etc/passwd
• /etc/shadow
• /etc/group
• User Management Tools

Learn about permission levels and modifying permissions.

• File Permissions
• Modifying Permissions
• Ownership Permissions
• Umask
• Setuid
• Setgid
• Process Permissions
• The Sticky Bit

Learn about the running processes on the system.

• ps (Processes)
• Controlling Terminal
• Process Details
• Process Creation
• Process Termination
• Signals
• kill (Terminate)
• niceness
• Process States
• /proc filesystem
• Job Control

Learn all about the dpkg, apt-get, rpm, and yum package management tools.

• Software Distribution
• Package Repositories
• tar and gzip
• Package Dependencies
• rpm and dpkg
• yum and apt
• Compile Source Code

Learn about Linux devices and how they interact with the kernel and user space.

• /dev directory
• device types
• Device Names
• sysfs
• udev
• lsusb, lspci, lssci
• dd

Learn about the Linux filesystem, the different types of filesystems, partitioning, and more.

• Filesystem Hierarchy
• Filesystem Types
• Anatomy of a Disk
• Disk Partitioning
• Creating Filesystems
• mount and umount
• /etc/fstab
• swap
• Disk Usage
• Filesystem Repair
• Inodes
• symlinks

Learn about the stages of the Linux boot process.

• Boot Process Overview
• Boot Process: BIOS
• Boot Process: Bootloader
• Boot Process: Kernel
• Boot Process: Init

The most important part of the Linux system; learn about how it works and how to configure it.

• Overview of the Kernel
• Privilege Levels
• System Calls
• Kernel Installation
• Kernel Location
• Kernel Modules

Learn about the different init systems: SysV, Upstart, and systemd.

• System V Overview
• System V Service
• Upstart Overview
• Upstart Jobs
• Systemd Overview
• Systemd Goals
• Power States

Learn resource monitoring with top, load averages, iostat, and more!

• Tracking processes: top
• lsof and fuser
• Process Threads
• CPU Monitoring
• I/O Monitoring
• Memory Monitoring
• Continuous Monitoring
• Cron Jobs

Learn about system logs and the /var/log directory.

• System Logging
• syslog
• General Logging
• Kernel Logging
• Authentication Logging
• Managing Log Files

Learn about network sharing with rsync, scp, nfs, and more.

• File Sharing Overview
• rsync
• Simple HTTP Server
• NFS
• Samba

Learn about networking basics and the TCP/IP model.

• Network Basics
• OSI Model
• TCP/IP Model
• Network Addressing
• Application Layer
• Transport Layer
• Network Layer
• Link Layer
• DHCP Overview

Learn about subnets and how to do subnet arithmetic!

• IPv4
• Subnets
• Subnet Math
• Subnetting Cheats
• CIDR
• NAT
• IPv6

Learn how packets are routed across networks!

• What is a router?
• Routing Table
• Path of a Packet
• Routing Protocols
• Distance Vector Protocols
• Link State Protocols
• Border Gateway Protocol

Learn about network configuration using Linux tools!

• Network Interfaces
• route
• dhclient
• Network Manager
• arp

Learn about common networking tools to help you diagnose and troubleshoot issues!

• ICMP
• ping
• traceroute
• netstat
• Packet Analysis

Everything and more that you wanted to know about DNS.

• What is DNS?
• DNS Components
• DNS Process
• /etc/hosts
• DNS Setup
• DNS Tools

We welcome contributions! See CONTRIBUTING.md for detailed guidelines on:

• Adding new lessons and content
• Translation guidelines
• Lesson templates and structure
• Development workflow

Content is licensed under CC BY-SA 4.0 and maintained by the LabEx team.