Practical Linux System Administration

1. Getting Started with Linux
	Installing Linux
		Preparing Your System for Linux
		Downloading and Installing Linux
		Getting to Know Your New Linux System
	Learning the Command Line Interface
		Commands for Filesystem Navigation
	Starting, Rebooting, and Shutting Down a Linux System
		Starting a System
		Restarting a System
		Shutting Down a System
	Summary
2. Diving Deeper into the Command Line Interface
	Working as a Regular User
	Working as the Root User
		Login as Root
		su to Root
		Use the sudo Command
		Creating a sudoer
	Setting and Modifying Permissions
		Read, Write, and Execute
		Numerical Permission Values
		Group Permissions
		Bringing Permissions Settings All Together
	Changing File Permissions
		Symbolic Mode
		Numeric Mode
		Default Permissions Explained: umask
	Summary
3. Customizing the User Experience
	Altering Home Directory Options
		Login Versus Non-login Shells
		/etc/bashrc
		/etc/profile
		.bashrc
		.bash_profile
		.bash_logout
	The /etc/skel Directory
	Customizing the Shell Prompt
	Summary
4. Managing Users
	Creating User Accounts
		Adding Users with adduser
		Adding Users with useradd
	Modifying User Accounts
		Adding a Supplementary Group
		Changing the User Comments Field
		Setting an Expiration (Expiry) Date on an Account
		Changing a User’s Login Shell
		User and Group ID Numbering Conventions
	Removing User Accounts
	Forcing Password Changes
	Handling Service Accounts
	Managing Groups Rather Than Users
	Summary
5. Connecting to a Network
	Plugging into a Network
		Static IP Addressing
		Dynamic IP Addressing
	Networking and Security
		Preparing a System for Network Connectivity
		Pruning Your Systems
		Securing Network Daemons
	Summary
6. Installing and Uninstalling Software
	Updating Your System
		Applying Red Hat Enterprise Linux-Based System Updates
		Applying Debian-Based System Updates
	Installing Software from Repositories
		Installing an Application
		Uninstalling an Application
	Installing and Uninstalling Individual Software Packages
		Installing an Individual Software Package Manually
		Uninstalling Individual Software Packages
		Finding Package Dependencies
	Installing Software from Source Code
		Satisfying Prerequisites: Building a Development Environment
		Download, Extract, Compile, and Install Your Software
		Uninstalling a Source-Installed Software Package
	Summary
7. Managing Storage
	Administering Linux Storage
		Disks
		Filesystems
		Mounting and mount points
		Physical and logical volumes
		Checking space
		Swap space
		RAM-based temporary space (ramfs, tmpfs)
	Adding a New Disk to a System
		Installing the disk
		Prepping the disk for use
		Implementing Logical Volumes
	Decommissioning and Disk Disposal
		Notification
		Scream test
		Power down
		Disk wiping
		Unracking and palletizing
		Disposal
	Summary
8. Maintaining System Health
	Keeping your system clutter-free
		Cleaning the /tmp directory
		Making /home a livable space for everyone
	Decluttering shared directories
		Deduplicating files with fdupes
		Tackling /home file sprawl with quotas
	Patching your way to a healthy system
		Patching a Red Hat Enterprise Linux-based system
		Patching a Debian-based Linux system
	Securing your systems
	Maintaining user and group accounts
		Setting up a naming convention
		Creating account retention policies
		Retiring group accounts
	Monitoring system health
		Gathering system activity reports
		Formatting system activity reports
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