CompTIA Linux+ Study Guide

THE BEST-SELLING, HANDS-ON ROADMAP TO ACING THE NEW LINUX+ EXAMIn the newly updated Fifth Edition of CompTIA Linux+ Study Guide: Exam XK0-005, IT industry veterans and tech education gurus Richard Blum and Christine Bresnahan deliver a concise and practical blueprint to success on the CompTIA Linux+ exam and in your first role as a Linux network or system administrator. In the book, you’ll find concrete strategies and proven techniques to master Linux system management, security, scripting, containers, automation, and troubleshooting. Every competency tested on the Linux+ exam is discussed here. You’ll also get:

* Hands-on Linux advice that ensures you’re job-ready on the first day of your new network or sysadmin role
* Test-taking tips and tactics that decrease exam anxiety and get you ready for the challenging Linux+ exam
* Complimentary access to the Sybex learning environment, complete with online test bank, bonus practice exams, electronic flashcards, and a searchable glossary

Perfect for practicing network and system admins seeking an in-demand and valuable credential for working with Linux servers and computers, CompTIA Linux+ Study Guide: Exam XK0-005, Fifth Edition, will also earn a place in the libraries of people looking to change careers and start down an exciting new path in tech. RICHARD BLUM has over 35 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, Mastering Linux System Administration, and the Linux Command Line and Shell Scripting Bible.

CHRISTINE BRESNAHAN has over 35 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, Mastering Linux System Administration, and the Linux Command Line and Shell Scripting Bible.Introduction xxxi

Assessment Test xliv

Answers to Assessment Test lv

PART I GATHERING YOUR TOOLS 1

Chapter 1 Preparing Your Environment 3

Chapter 2 Introduction to Services 17

Chapter 3 Managing Files, Directories, and Text 43

Chapter 4 Searching and Analyzing Text 89

PART II STARTING UP AND CONFIGURING YOUR SYSTEM 131

Chapter 5 Explaining the Boot Process 133

Chapter 6 Maintaining System Startup and Services 157

Chapter 7 Configuring Network Connections 199

Chapter 8 Comparing GUIs 235

Chapter 9 Adjusting Localization Options 269

PART III MANAGING YOUR SYSTEM 289

Chapter 10 Administering Users and Groups 291

Chapter 11 Handling Storage 329

Chapter 12 Protecting Files 363

Chapter 13 Governing Software 393

Chapter 14 Tending Kernel Modules 423

PART IV SECURING YOUR SYSTEM 437

Chapter 15 Applying Ownership and Permissions 439

Chapter 16 Looking at File and Directory Permissions 440

Chapter 17 Implementing Logging Services 503

Chapter 18 Overseeing Linux Firewalls 517

Chapter 19 Embracing Best Security Practices 547

PART V TROUBLESHOOTING YOUR SYSTEM 571

Chapter 20 Analyzing System Properties and Remediation 573

Chapter 21 Optimizing Performance 607

Chapter 22 Investigating User Issues 623

Chapter 23 Dealing with Linux Devices 643

Chapter 24 Troubleshooting Application and Hardware Issues 667

PART VI AUTOMATING YOUR SYSTEM 697

Chapter 25 Deploying Bash Scripts 699

Chapter 26 Automating Jobs 727

Chapter 27 Controlling Versions with Git 749

PART VII REALIZING VIRTUAL AND CLOUD ENVIRONMENTS 771

Chapter 28 Understanding Cloud and Virtualization Concepts 773

Chapter 29 Inspecting Cloud and Virtualization Services 791

Chapter 30 Orchestrating the Environment 813

Index 897