Linux Command Line and Shell Scripting Bible

Advance your understanding of the Linux command line with this invaluable resource

Linux Command Line and Shell Scripting Bible, 4th Edition is the newest installment in the indispensable series known to Linux developers all over the world. Packed with concrete strategies and practical tips, the latest edition includes brand-new content covering:

• Understanding the Shell

• Writing Simple Script Utilities

• Producing Database, Web & Email Scripts

• Creating Fun Little Shell Scripts

Written by accomplished Linux professionals Christine Bresnahan and Richard Blum, Linux Command Line and Shell Scripting Bible, 4th Edition teaches readers the fundamentals and advanced topics necessary for a comprehensive understanding of shell scripting in Linux. The book is filled with real-world examples and usable scripts, helping readers navigate the challenging Linux environment with ease and convenience.

The book is perfect for anyone who uses Linux at home or in the office and will quickly find a place on every Linux enthusiast's bookshelf.

Auteur

RICHARD BLUM has over three decades of experience working as a system and network administrator. He is the author of several Linux books and is an accomplished online Linux instructor.

CHRISTINE BRESNAHAN is an Adjunct Professor at Ivy Tech Community College where she teaches Linux certification and Python classes. She is the author of several Linux books, including the CompTIA Linux+ Study Guide, Fourth Edition.

Contenu

Acknowledgments xi

Part I: The Linux Command Line 1

Chapter 1: Starting with Linux Shells 3

Investigating Linux 3

Looking into the Linux kernel 4

System memory management 5

Software program management 6

Hardware management 8

Filesystem management 8

The GNU utilities 9

The core GNU utilities 10

The shell 10

The Linux desktop environment 11

The X Window software 12

The KDE Plasma desktop 12

The GNOME desktop 13

Other desktops 15

Examining Linux Distributions 17

Core Linux distributions 18

Specialized Linux distributions 19

Summary 20

Chapter 2: Getting to the Shell 21

Reaching the Command Line 21

Console terminals 22

Graphical terminals 22

Accessing CLI via a Linux Console Terminal 23

Accessing CLI via Graphical Terminal Emulation 26

Using the GNOME Terminal Emulator 27

Accessing GNOME Terminal 27

The menu bar 32

Using the Konsole Terminal Emulator 36

Accessing Konsole 36

The menu bar 38

Using the xterm Terminal Emulator 42

Accessing xterm 43

Command-line parameters 44

Summary 45

Chapter 3: Basic Bash Shell Commands 47

Starting the Shell 47

Using the Shell Prompt 48

Interacting with the Bash Manual 49

Navigating the Filesystem 53

Looking at the Linux filesystem 53

Traversing directories 57

Using absolute directory references 57

Using relative directory references 59

Listing Files and Directories 60

Displaying a basic listing 61

Displaying a long listing 63

Filtering listing output 64

Handling Files 66

Creating files 66

Copying files 66

Using command-line completion 69

Linking files 69

Renaming files 71

Deleting files 73

Managing Directories 74

Creating directories 74

Deleting directories 75

Viewing File Contents 77

Viewing the file type 77

Viewing the whole file 78

Using the cat command 78

Using the more command 78

Using the less command 80

Viewing parts of a file 80

Using the tail command 80

Using the head command 82

Summary 82

Chapter 4: More Bash Shell Commands 85

Monitoring Programs 85

Peeking at the processes 85

Unix-style parameters 86

BSD-style parameters 89

The GNU long parameters 91

Real-time process monitoring 93

Stopping processes 95

The kill command 95

The pkill command 96

Monitoring Disk Space 96

Mounting media 97

The mount command 97

The umount command 99

Using the df command 100

Using the du command 101

Working with Data Files 102

Sorting data 102

Searching for data 106

Compressing data 108

Archiving data 109

Summary 111

Chapter 5: Understanding the Shell 113

Investigating Shell Types 113

Exploring Parent and Child Shell Relationships 117

Looking at process lists 121

Creatively using subshells 123

Investigating background mode 123

Putting process lists into the background 125

Looking at co-processing 126

Understanding External and Built-In Commands 127

Looking at external commands 128 Looking at built-i...