CompTIA Linux+ Study Guide

The bestselling study guide completely updated for the NEW CompTIA Linux+ Exam XK0-004

This is your one-stop resource for complete coverage of Exam XK0-004, covering 100% of all exam objectives. You'll prepare for the exam smarter and faster with Sybex thanks to superior content including, assessment tests that check exam readiness, objective map, real-world scenarios, hands-on exercises, key topic exam essentials, and challenging chapter review questions.

Linux is a UNIX-based operating system originally created by Linus Torvalds with the help of developers around the world. Developed under the GNU General Public License, the source code is free. Because of this Linux is viewed by many organizations and companies as an excellent, low-cost, secure alternative to expensive OSs, such as Microsoft Windows. The CompTIA Linux+ exam tests a candidate's understanding and familiarity with the Linux Kernel. As the Linux server market share continues to grow, so too does demand for qualified and certified Linux administrators.

Building on the popular Sybex Study Guide approach, this book will provide 100% coverage of the NEW Linux+ Exam XK0-004 objectives. The book contains clear and concise information on all Linux administration topic, and includes practical examples and insights drawn from real-world experience.

• Hardware and System Configuration

• Systems Operation and Maintenance

• Security

• Linux Troubleshooting and Diagnostics

• Automation and Scripting

You'll also have access to an online test bank, including a bonus practice exam, electronic flashcards, and a searchable PDF of key terms.

Autorentext

CHRISTINE BRESNAHAN, LINUX+, started working with computers more than 30 years ago as a system administrator. She is an Adjunct Professor at Ivy Tech Community College, where she teaches Linux Essentials, CompTIA Linux+ certification, and Python classes. RICHARD BLUM, LINUX+, is a 30-year IT industry veteran, as both systems and network administrator for UNIX, Linux, and Microsoft servers. Rich is widely published on Linux and open source software and is an online Linux instructor for universities nationwide.

Klappentext
Bestselling Study Guide Updated for the New CompTIA Linux+ Exam XK0-004 The CompTIA Linux+ Study Guide, 4th Edition, reflects major changes to the Linux+ certification program. Candidates are now required to pass only one examthe XK0-004. This Sybex Study Guide covers 100% of the objectives for the certification test. You'll prepare for the exam smarter and faster with Sybex, thanks to targeted content, including a self-assessment, exam essentials for each key topic, review questions, a certification objectives map, and concise chapter summaries. Reinforce what you have learned with the exclusive Sybex online learning environment and test bank, assessable across multiple devices. Get prepared for the CompTIA Linux+ exam with Sybex. Coverage of 100% of all exam objectives in this Study Guide means you'll be ready for:

• Information, Networking, and Security Services
• Starting up and Configuring a Linux System
• Administering Users and Groups
• Authentication, Permissions, and Firewalls
• Troubleshooting Software, Hardware, and User Issues
• Automation and Version Control

• Environment Virtualization and Cloud Services ABOUT THE CompTIA Linux+ PROGRAM Linux is viewed by many as an excellent, low-cost, secure alternative to other operating systems. The CompTIA Linux+ exam tests a candidate's understanding and familiarity with the Linux Kernel. As the Linux server market share continues to grow, so too does demand for qualified and certified Linux administrators. Visit https://certification.comptia.org/ for more information. Interactive learning environment Take your exam prep to the next level with Sybex's superior interactive online study tools. To access our learning environment, simply visit http://www.wiley.com/go/sybextestprep, type in your unique PIN, and instantly gain access to:

• Practice questions help you identify areas where further review is needed. Get more than 90% of the answers correct, and you're ready to take the certification exam.
• Electronic flashcards to reinforce learning and last- minute prep before the exam.
• Comprehensive glossary in PDF format gives you instant access to the key terms so you are fully prepared.

Inhalt
Introduction xxix

Assessment Test xlii

Part I Gathering Your Tools 1

Chapter 1 Preparing Your Environment 3

Setting Up a Learning Space 4

Exploring Linux Distributions 8

Locating a Terminal 14

Summary 14

Chapter 2 Sifting Through Services 15

What is a Linux Server? 16

Serving the Basics 19

Serving Local Networks 24

Implementing Security 29

Improving Performance 32

Summary 33

Exam Essentials 34

Review Questions 35

Chapter 3 Managing Files, Directories, and Text 39

Handling Files and Directories 40

Linking Files and Directories 55

Reading Files 59

Finding Information 66

Summary 77

Exam Essentials 77

Review Questions 78

Chapter 4 Searching and Analyzing Text 83

Processing Text Files 84

Redirecting Input and Output 95

Editing Text Files 105

Summary 116

Exam Essentials 117

Review Questions 118

Part II Starting Up and Configuring Your System 123

Chapter 5 Explaining the Boot Process 125

The Linux Boot Process 126

The Firmware Startup 128

Linux Bootloaders 130

System Recovery 137

Summary 141

Exam Essentials 141

Review Questions 143

Chapter 6 Maintaining System Startup and Services 147

Looking at init 148

Managing systemd Systems 149

Managing SysV init Systems 167

Digging Deeper into systemd 176

Summary 179

Exam Essentials 179

Review Questions 181

Chapter 7 Configuring Network Connections 187

Configuring Network Features 188

Basic Network Troubleshooting 201

Advanced Network Troubleshooting 205

Summary 209

Exam Essentials 210

Review Questions 212

Chapter 8 Comparing GUIs 217

Focusing on the GUI 218

Serving Up the GUI 231

Using Remote Desktops 235

Forwarding 240

Summary 245

Exam Essentials 245

Review Questions 247

Chapter 9 Adjusting Localization Options 253

Understanding Localization 254

Setting Your Locale 256

Looking at Time 259

Summary 265

Exam Essentials 266

Review Questions 267

Part III Managing Your System 273

Chapter 10 Administering Users and Groups 275

Managing User Accounts 276

Managing Groups 294

Setting Up the Environment 297

Querying Users 300

Managing Disk Space Usage 304

Summary 308

Exam Essentials 308

Review Questions 310

Chapter 11 Handling Storage 315

Storage Basics 316

Partitioning Tools 318

Understanding Filesystems 323

Formatting Filesystems 326

Mounting Filesystems 329

Managing Filesystems 331

Storage Alternatives 333

Summary 338

Exam Essentials 338

Review Questions 340

Chapter 12 Protecting Files 343

Understanding Backup Types 344

Looking at Compression Methods 346

Comparing Archive and Restore Utilities 349

Securing Offsite/Off-System Backups 362

Checking Backup Integrity 366

Summary 368

Exam Essentials 368

Review Questions 370

Chapter 13 Governing Software 373

Working with Source Code 374

Packaging Applications 380 Summary 3...