Learn Linux Quickly: A beginner-friendly guide to getting up and running with the world's most powerful operating system

Cover
Title Page
Copyright and Credits
Dedication
About Packt
Contributors
Table of Contents
Preface
Chapter 1: Your First Keystrokes
	A little bit of history
	Linux today and the future
	Installing a Linux virtual machine
	Terminal versus Shell
	A few simple commands
	Knowledge check
		True or false
Chapter 2: Climbing the Tree
	The Linux filesystem
	Navigating through the directory tree
	Parent and current directories
	Moving around quickly
		Go back home!
		Take me back!
	Hidden Files
	Passing command arguments
	The touch command
	Making directories
	Combining command options
	Knowledge check
		True or false
Chapter 3: Meet the Editors
	Graphical editors – gedit and kate
	The nano editor
	The vi editor
		Insert mode
		Command mode
		Saving and exiting vi
	File viewing commands
		The cat command
		The tac command
		The more command
		The less command
		Heads or tails?
	Knowledge check
Chapter 4: Copying, Moving, and Deleting Files
	Copying one file
	Copying multiple files
	Copying one directory
	Copying multiple directories
	Moving one file
	Moving multiple files
	Moving one directory
	Moving multiple directories
	Renaming files
	Hiding files
	Removing files
	Removing directories
	Knowledge check
		True or false
Chapter 5: Read Your Manuals!
	The four categories of linux commands
	Determining a command\'s type
	Finding a command\'s location
	What does the command do?
	The man page
	Help for shell builtins
	The info page
	The very helpful apropos command
	The /usr/share/doc directory
	Knowledge check
		True or false
Chapter 6: Hard versus Soft Links
	File inodes
	Displaying file inode number
	Creating soft links
	Creating hard links
	Knowledge check
		True or false
Chapter 7: Who Is Root?
	Accessing the root user
	Setting the root password
	The dash difference
	Knowledge check
		True or false
Chapter 8: Controlling the Population
	The /etc/passwd file
	Adding users
	Modifying user attributes
	Defining the skeleton
	Changing the defaults
	Removing users
	The /etc/group file
	Adding groups
	Adding group members
	Primary versus secondary groups
	Removing groups
	File ownership and permissions
	Changing file ownership
	Understanding file permissions
	Changing file permissions
	Directory permissions
	Using octal notation
	Knowledge check
		True or false
Chapter 9: Piping and I/O Redirection
	Linux pipes
	Input and output redirection
	Redirecting standard output
	Redirecting standard error
	Redirecting all output to the same file
	Discarding output
	Redirecting standard input
	Knowledge check
Chapter 10: Analyzing and Manipulating Files
	Spot the difference
	Viewing file size
	Counting characters, words, and lines
	Viewing the file type
	Sorting files
	Showing unique lines
	Searching for patterns
	The stream editor
	Translating characters
	Cutting text
	Text processing with awk
	Wildcard characters
	Regular expressions
	Knowledge check
Chapter 11: Let\'s Play Find and Seek
	The locate command
	Updating the file database
	The find command
	Knowledge check
Chapter 12: You Got a Package
	What is a package?
	The role of a package manager
	Where do packages come from?
	How to download packages
	How to install packages
	How to remove packages
	How to search for packages
	How to show package information
	Listing all packages
	Patching your system
	Knowledge check
Chapter 13: Kill the Process
	What is a process?
	Parent process versus child process
	Foreground versus background processes
	Sending signals to processes
	Working with process priority
		Viewing a process priority
		Setting priorities for new processes
		Changing a process priority
	The /proc directory
	Knowledge check
Chapter 14: The Power of Sudo
	Examples of privileged commands
	Granting access with sudo
	User and command aliases
	Group privileges
	Listing user privileges
	visudo versus /etc/sudoers
	Knowledge check
Chapter 15: What\'s Wrong with the Network?
	Testing network connectivity
	Listing your network interfaces
		The ip command
		The nmcli command
	Checking your IP address
	Checking your gateway address
	Flying with traceroute
	Breaking your DNS
	Changing your hostname
	Restarting your network interface
	Knowledge check
Chapter 16: Bash Scripting Is Fun
	Creating simple scripts
	The PATH variable
	Reading user input
	Passing arguments to scripts
	Using the if condition
	Looping in bash scripts
		Using the for loop
		Using the while loop
		Using the until loop
	Bash script functions
		Passing function arguments
	No browsing for you
	Knowledge check
Chapter 17: You Need a Cron Job
	Our first cron job
	Run every five minutes
	More cron examples
	Automating system patching
	Running a job once
	Knowledge check
Chapter 18: Archiving and Compressing Files
	Creating an archive
	Viewing archive contents
	Extracting archive files
	Compressing with gzip
	Compressing with bzip2
	Compressing with xz
	Measuring performance
	Knowledge check
Chapter 19: Create Your Own Commands
	Your first alias
	One alias for multiple commands
	Listing all aliases
	Creating a permanent alias
	Removing an alias
	Some useful aliases
	Adding safety nets
	Go crazy with aliases
	Knowledge check
Chapter 20: Everyone Needs Disk Space
	Where are your devices?
	Where is your hard disk?
	Adding disks to your virtual machine
	Creating new disk partitions
	Creating new filesystems
	Mounting filesystems
	Unmounting filesystems
	Permanently mounting filesystems
	Running out of space
	Corrupting and fixing filesystems
	LVM to the rescue
		Installing the LVM package
		Three layers of abstraction
		Creating physical volumes
		Creating volume groups
		Creating logical volumes
		Extending logical volumes
		Extending volume groups
	Knowledge check
Chapter 21: echo ”Goodbye My Friend”
	Where to go next?
	Keep in touch
Assessments
Other Books You May Enjoy
Index