Let's Learn Linux

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Grasshopper

Getting Started - What is Linux? Get started with choosing a distribution and installation.
Command Line - Learn the fundamentals of the command line, navigating files, directories and more.
Text-Fu - Learn basic text manipulation and navigation.
Advanced Text-Fu - Navigate text like a Linux spider monkey with vim and emacs.
User Management - Learn about user roles and management.
Permissions - Learn about permission levels and modifying permissions.
Processes - Learn about the running processes on the system.
Packages - Learn all about the dpkg, apt-get, rpm and yum package management tools.

Devices - Learn about Linux devices and how they interact with the kernel and user space.
The Filesystem - Learn about the Linux filesystem, the different types of filesystems, partitioning and more.
Boot the System - Learn about the stages of the Linux boot process.
Kernel - The most important part of the Linux system, learn about how it works and how to configure it.
Init - Learn about the different init systems, SysV, Upstart and systemd.
Process Utilization - Learn resource monitoring with top, load averages, iostat and more!
Logging - Learn about system logs and the /var/log directory.

Network Sharing - Learn about network sharing with rsync, scp, nfs and more.
Network Basics - Learn about networking basics and the TCP/IP model.
Subnetting - Learn about subnets and how to do subnet arithmetic!
Routing - Learn how packets are routed across networks!
Network Config - Learn about network configuration using Linux tools!
Troubleshooting - Learn about common networking tools to help you diagnose and troubleshoot issues!
DNS - Everything and more that you wanted to know about DNS.