Mastering Linux System Administration

Achieve Linux system administration mastery with time-tested and proven techniques

In Mastering Linux System Administration, Linux experts and system administrators Christine Bresnahan and Richard Blum deliver a comprehensive roadmap to go from Linux beginner to expert Linux system administrator with a learning-by-doing approach. Organized by do-it-yourself tasks, the book includes instructor materials like a sample syllabus, additional review questions, and slide decks.

Amongst the practical applications of the Linux operating system included within, you'll find detailed and easy-to-follow instruction on:

• Installing Linux servers, understanding the boot and initialization processes, managing hardware, and working with networks

• Accessing the Linux command line, working with the virtual directory structure, and creating shell scripts to automate administrative tasks

• Managing Linux user accounts, system security, web and database servers, and virtualization environments

Perfect for entry-level Linux system administrators, as well as system administrators familiar with Windows, Mac, NetWare, or other UNIX systems, Mastering Linux System Administration is a must-read guide to manage and secure Linux servers.

Auteur

Christine Bresnahan has over thirty years of experience working in the IT industry. She is an Adjunct Professor at Ivy Tech Community College where she teaches Linux certification and Python programming classes. She is co-author with Richard Blum of CompTIA Linux+ Study Guide, Linux Essentials, and the Linux Command Line and Scripting Bible. Richard Blum has over thirty years of experience working as a system and network administrator. He teaches online courses in Linux and Web programming and is co-author with Christine Bresnahan of several Linux titles, including CompTIA Linux+ Study Guide, Linux Essentials, and the Linux Command Line and Scripting Bible.

Texte du rabat

Achieve Linux System Administration Mastery With This Hands-On Guide

Whether you're already a Linux system administrator or just learning the ropes, Mastering Linux® System Administration gives you a comprehensive roadmap to Linux proficiency. An expert author team delivers a learning-by-doing approach to Linux system administration, offering do-it-yourself tasks and detailed, easy-to-follow instructions. Included instructor materials provide readers with a sample syllabus, additional review questions, and slide decks for classroom use.

The book prepares you to manage and secure Linux servers on private networks and over the Internet and is ideal for entry-level administrators as well as those familiar with Windows, Mac, NetWare, and other UNIX servers.

Coverage includes:

• Understanding the components of Linux servers
• Navigating file management and storage on a Linux system
• Adding a computer to a Linux network
• Using the command line to create, move, delete, and archive files
• Turning commands into scripts and using the command line editor
• Identifying user types and creating users and groups
• Setting permissions and ownership and creating special directories
• Securing Linux systems on public and private networks
• Encrypting connections to Linux systems over a network
• Installing and managing Web and Database servers Understand the Kernel, Interface, and GNU

Install Ubuntu and Red Hat Servers

Install and Maintain Linux Software

Work With The Linux Shell

Manage and Explore Files in Linux

Résumé

Achieve Linux system administration mastery with time-tested and proven techniques

In Mastering Linux System Administration, Linux experts and system administrators Christine Bresnahan and Richard Blum deliver a comprehensive roadmap to go from Linux beginner to expert Linux system administrator with a learning-by-doing approach. Organized by do-it-yourself tasks, the book includes instructor materials like a sample syllabus, additional review questions, and slide decks.

Amongst the practical applications of the Linux operating system included within, you'll find detailed and easy-to-follow instruction on:

• Installing Linux servers, understanding the boot and initialization processes, managing hardware, and working with networks
• Accessing the Linux command line, working with the virtual directory structure, and creating shell scripts to automate administrative tasks
• Managing Linux user accounts, system security, web and database servers, and virtualization environments
  Perfect for entry-level Linux system administrators, as well as system administrators familiar with Windows, Mac, NetWare, or other UNIX systems, Mastering Linux System Administration is a must-read guide to manage and secure Linux servers.

Contenu

Introduction xxv

Part 1 Basic Admin Functions 1

Chapter 1 Understanding the Basics 3

What is Linux? 3

Looking into the Linux Kernel 4

The GNU Utilities 12

Linux User Interfaces 12

Linux Distributions 18

Core Linux Distributions 19

Specialized Linux Distributions 19

The Bottom Line 20

Chapter 2 Installing an Ubuntu Server 23

Pre-Installation Requirements 23

Hardware Requirements 24

Virtual Server Requirements 25

Finding the Software 26

Oracle VirtualBox 26

Ubuntu Server 26

Running the Installation 29

Oracle VirtualBox 29

Ubuntu Server 33

Checking the Installation 49

The Bottom Line 50

Chapter 3 Installing and Maintaining Software in Ubuntu 53

Exploring Package Management 53

Inspecting the Debian-Based Systems 54

Managing Packages with apt 54

Installing Software Packages with apt 56

Upgrading Software with apt 59

Uninstalling Software with apt 60

The apt Repositories 61

Using Snap Containers 62

Installing from Source Code 64

The Bottom Line 66

Chapter 4 Installing a Red Hat Server 69

Pre-Installation Requirements 69

Hardware Requirements 70

Virtual Server Requirements 71

Finding the Software 72

Oracle VirtualBox 72

CentOS 73

Running the Installation 76

Oracle VirtualBox 77

CentOS 77

Checking the Installation 96

The Bottom Line 97

Chapter 5 Installing and Maintaining Software in Red Hat 99

Exploring Red Hat Packages 99

Automated Package Management 100

Listing Installed Packages 100

Installing Software with dnf 102

Upgrading Software with dnf 104

Uninstalling Software with dnf 104

Handling Broken Dependencies 105

Working with RPM Repositories 106

Working Directly with Packages 107

Finding Package Files 107

Inspecting Package Files 108

Installing Package Files 109

Removing Package Files 110

Using Flatpak Containers 111

The Bottom Line 113

Chapter 6 Working with the Shell 115

Exploring the Shell 115

The Shell Prompt 116

The Shell Manual 117

Working with Commands 121

Entering Commands 121

Retrieving Past Commands 123

Redirecting Commands 125

Environment Variables 129

Global Environment Variables 129

User-Defined Environment Variables 131

The Bottom Line 133

Chapter 7 Exploring Linux File Management 135

Filesystem Navigation 135

The Linux Filesystem 135

Traversing Directories 138

Linux Files 139

Determining File Types 139

Filenames 140

Hidden Files 140

File Inodes 141

File and Directory Listing 142

Basic Listing 142

Modifying Listing Information 143

The Complete Parameter List 143

Directory Handling 146

Creating Directories 146

Deleting Directories 146

File Handling 147

Creating Files 147

Copying Files 148

Linking Files 150

Renaming Files 152

Deleting Files 152

File Features 154

Using Wildcards 154

Quoting 155

Case Sensitivity 156

Finding Files 156

The which Comm…