CompTIA Linux+ Powered by Linux Professional Institute Study Guide
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CompTIA Linux+ Powered by Linux Professional Institute Study Guide: Exam LX0-103 and Exam LX0-104

CompTIA Linux+ Powered by Linux Professional Institute Study Guide: Exam LX0-103 and Exam LX0-104

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About the Book

CompTIA Authorized Linux+ prep CompTIA Linux+ Study Guide is your comprehensive study guide for the Linux+ Powered by LPI certification exams. With complete coverage of 100% of the objectives on both exam LX0-103 and exam LX0-104, this study guide provides clear, concise information on all aspects of Linux administration, with a focus on the latest version of the exam. You'll gain the insight of examples drawn from real-world scenarios, with detailed guidance and authoritative coverage of key topics, including GNU and Unix commands, system operation, system administration, system services, security, and more, from a practical perspective that easily translates into on-the-job know-how. You'll also get access to helpful study tools, including bonus practice exams, electronic flashcards, and a searchable glossary of key terms that are important to know for exam day. Linux is viewed by many companies and organizations as an excellent, low-cost, secure alternative to expensive operating systems such as Microsoft Windows. The CompTIA Linux+ Powered by LPI exams test a candidate's understanding and familiarity with the Linux Kernel. Review the basic system architecture, installation, and management Understand commands, devices, and file systems Utilize shells, scripting, and data management techniques Navigate user interfaces, desktops, and essential system services As the Linux server market share continue to grow, so too does the demand for qualified and certified Linux administrators. Certification holders must recertify every five years, but LPI recommends recertifying every two years to stay fully up to date with new technologies and best practices. CompTIA Linux+ Study Guide gives you the advantage of exam day confidence.

Table of Contents:
Introduction xxi Assessment Test xxxix Answers to the Assessment Test xlvi Part I Exam LX0-103 1 Chapter 1 Exploring Linux Command-Line Tools 3 Understanding Command-Line Basics 4 Exploring Your Linux Shell Options 4 Using a Shell 5 Exploring Shell Configuration 13 Using Environment Variables 13 Getting Help 14 Using Streams, Redirection, and Pipes 16 Exploring File Descriptors 17 Redirecting Input and Output 17 Piping Data between Programs 19 Generating Command Lines 20 Processing Text Using Filters 22 File-Combining Commands 22 File-Transforming Commands 24 File-Formatting Commands 28 File-Viewing Commands 31 File-Summarizing Commands 33 Using Regular Expressions 35 Understanding Regular Expressions 35 Using grep 36 Using sed 38 Summary 41 Exam Essentials 41 Review Questions 42 Chapter 2 Managing Software 47 Package Concepts 48 Using RPM 50 RPM Distributions and Conventions 50 The rpm Command Set 52 Extracting Data from RPMs 56 Using Yum 57 RPM and Yum Configuration Files 61 RPM Compared to Other Package Formats 62 Using Debian Packages 63 Debian Distributions and Conventions 63 The dpkg Command Set 64 Using apt-cache 67 Using apt-get 68 Using dselect, aptitude, and Synaptic 72 Reconfiguring Packages 73 Debian Packages Compared to Other Package Formats 73 Configuring Debian Package Tools 74 Converting between Package Formats 75 Package Dependencies and Conflicts 77 Real and Imagined Package Dependency Problems 77 Workarounds for Package Dependency Problems 78 Startup Script Problems 80 Managing Shared Libraries 81 Library Principles 81 Locating Library Files 83 Library Management Commands 85 Managing Processes 87 Understanding the Kernel: The First Process 88 Examining Process Lists 88 Understanding Foreground and Background Processes 95 Managing Process Priorities 96 Killing Processes 97 Summary 99 Exam Essentials 99 Review Questions 101 Chapter 3 Configuring Hardware 107 Configuring the Firmware and Core Hardware 108 Understanding the Role of the Firmware 108 IRQs 112 I/O Addresses 115 DMA Addresses 116 Boot Disks and Geometry Settings 117 Coldplug and Hotplug Devices 119 Configuring Expansion Cards 120 Configuring PCI Cards 121 Learning about Kernel Modules 122 Loading Kernel Modules 124 Removing Kernel Modules 125 Configuring USB Devices 126 USB Basics 126 Linux USB Drivers 127 USB Manager Applications 128 Configuring Hard Disks 129 Configuring PATA Disks 129 Configuring SATA Disks 130 Configuring SCSI Disks 130 Configuring External Disks 132 Designing a Hard Disk Layout 132 Why Partition? 133 Understanding Partitioning Systems 133 An Alternative to Partitions: LVM 136 Mount Points 136 Common Partitions and Filesystem Layouts 137 Creating Partitions and Filesystems 139 Partitioning a Disk 140 Preparing a Partition for Use 145 Maintaining Filesystem Health 151 Tuning Filesystems 151 Maintaining a Journal 156 Checking Filesystems 157 Monitoring Disk Use 158 Mounting and Unmounting Filesystems 161 Temporarily Mounting or Unmounting Filesystems 162 Permanently Mounting Filesystems 167 Summary 169 Exam Essentials 170 Review Questions 172 Chapter 4 Managing Files 177 Using File Management Commands 178 Naming Files 178 Exploring Wildcard Expansion Rules 180 Understanding the File Commands 180 Archiving File Commands 187 Managing Links 195 Understanding the Directory Commands 198 Managing File Ownership 199 Assessing File Ownership 199 Changing a File’s Owner 200 Changing a File’s Group 200 Controlling Access to Files 200 Understanding Permissions 201 Changing a File’s Mode 206 Setting the Default Mode and Group 210 Changing File Attributes 212 Managing Disk Quotas 213 Enabling Quota Support 214 Setting Quotas for Users 215 Locating Files 216 Getting to Know the FHS 216 Employing Tools to Locate Files 222 Summary 226 Exam Essentials 226 Review Questions 228 Chapter 5 Booting Linux and Editing Files 233 Installing Boot Loaders 234 Boot Loader Principles 235 Using GRUB Legacy as the Boot Loader 238 Using GRUB 2 as the Boot Loader 243 Using Alternative Boot Loaders 245 Understanding the Boot Process 247 Extracting Information about the Boot Process 247 Locating and Interpreting Boot Messages 248 The Boot Process 248 The Initialization Process 249 Using the SysV Initialization Process 250 Runlevel Functions 250 Identifying the Services in a Runlevel 252 Managing Runlevel Services 253 Checking Your Runlevel 255 Changing Runlevels on a Running System 255 Using the systemd Initialization Process 258 Units and Targets 259 Configuring Units 260 Setting the Default Target 261 The systemctl Program 262 Using the Upstart Initialization Process 263 Using Upstart-Native Methods 264 Using SysV Compatibility Methods 264 Editing Files with vi 265 Understanding Vi Modes 265 Exploring Basic Text-Editing Procedures 266 Saving Changes 269 Summary 270 Exam Essentials 270 Review Questions 272 Part II Exam LX0-104 277 Chapter 6 Configuring the X Window System, Localization, and Printing 279 Configuring Basic X Features 280 X Server Options for Linux 280 Methods of Configuring X 282 X Configuration Options 285 Obtaining X Display Information 293 Configuring X Fonts 295 Font Technologies and Formats 296 Configuring X Core Fonts 296 Configuring a Font Server 299 Configuring Xft Fonts 300 Managing GUI Logins 301 The X GUI Login System 301 Running an XDMCP Server 302 Configuring an XDMCP Server 304 Using X for Remote Access 306 X Client-Server Principles 306 Using Remote X Clients 307 X Accessibility 310 Keyboard and Mouse Accessibility Issues 310 Screen Display Settings 312 Using Additional Assistive Technologies 314 Configuring Localization and Internationalization 315 Setting Your Time Zone 315 Querying and Setting Your Locale 318 Configuring Printing 321 Conceptualizing the Linux Printing Architecture 321 Understanding PostScript and Ghostscript 322 Running a Printing System 324 Configuring CUPS 324 Monitoring and Controlling the Print Queue 330 Summary 335 Exam Essentials 335 Review Questions 337 Chapter 7 Administering the System 343 Managing Users and Groups 344 Understanding Users and Groups 344 Configuring User Accounts 348 Configuring Groups 359 Viewing Individual Account Records 362 Tuning User and System Environments 364 Using Log and Journal Files 365 Understanding syslogd 366 Setting Logging Options 366 Manually Logging Data 369 Rotating Log Files 370 Reviewing Log File Contents 373 Exploring the systemd Journal System 374 Maintaining the System Time 379 Understanding Linux Time Concepts 379 Manually Setting the Time 380 Using Network Time Protocol 381 Running Jobs in the Future 389 Understanding the Role of cron 389 Creating System cron Jobs 390 Creating User cron Jobs 391 Using anacron 394 Using at 396 Summary 399 Exam Essentials 399 Review Questions 401 Chapter 8 Configuring Basic Networking 407 Understanding TCP/IP Networking 408 Knowing the Basic Functions of Network Hardware 408 Investigating Types of Network Hardware 409 Understanding Network Packets 411 Understanding Network Protocol Stacks 411 Knowing TCP/IP Protocol Types 413 Understanding Network Addressing 414 Using Network Addresses 414 Resolving Hostnames 421 Network Ports 424 Configuring Linux for a Local Network 427 Network Hardware Configuration 428 Configuring with DHCP 428 Configuring Routing 432 Using GUI Configuration Tools 434 Using the ifup and ifdown Commands 434 Configuring Hostnames 435 Diagnosing Network Connections 438 Testing Basic Connectivity 438 Tracing a Route 439 Checking Network Status 441 Examining Raw Network Traffic 441 Using Additional Tools 443 Summary 445 Exam Essentials 445 Review Questions 447 Chapter 9 Writing Scripts, Configuring Email, and Using Databases 453 Managing the Shell Environment 454 Reviewing Environment Variables 454 Understanding Common Environment Variables 455 Using Aliases 459 Modifying Shell Configuration Files 460 Writing Scripts 462 Beginning a Shell Script 463 Using Commands in Shell Scripts 463 Running a Shell Script 465 Using Variables in Shell Scripts 470 Using Conditional Expressions 478 Using Loops 485 Using Lists 493 Using Functions 495 Managing Email 497 Understanding Email 498 Choosing Email Software 498 Working with Email 500 Managing Data with SQL 504 Picking a SQL Package 505 Understanding SQL Basics 505 Using MySQL 506 Summary 515 Exam Essentials 515 Review Questions 517 Chapter 10 Securing Your System 523 Administering Network Security 524 Using Super Server Restrictions 525 Disabling Unused Servers 530 Administering Local Security 540 Securing Passwords 540 Limiting root Access 544 Auditing User Access 547 Setting Login, Process, and Memory Limits 551 Locating SUID/SGID Files 553 Configuring SSH 555 Understanding SSH Basics 555 Setting SSH Options 556 Preventing SSH Security Problems 563 Using GPG 563 Generating Keys 564 Importing Keys 565 Revoking a Key 566 Encrypting and Decrypting Data 566 Signing Messages and Verifying Signatures 567 Summary 567 Exam Essentials 568 Review Questions 570 Appendix Answers 575 Chapter 1: Exploring Linux Command-Line Tools 576 Chapter 2: Managing Software 579 Chapter 3: Configuring Hardware 583 Chapter 4: Managing Files 586 Chapter 5: Booting Linux and Editing Files 590 Chapter 6: Configuring the X Window System, Localization, and Printing 593 Chapter 7: Administering the System 597 Chapter 8: Configuring Basic Networking 601 Chapter 9: Writing Scripts, Configuring Email, and Using Databases 605 Chapter 10: Securing Your System 609 Index 613


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Product Details
  • ISBN-13: 9781119021216
  • Publisher: John Wiley & Sons Inc
  • Publisher Imprint: Sybex Inc.,U.S.
  • Height: 234 mm
  • No of Pages: 688
  • Sub Title: Exam LX0-103 and Exam LX0-104
  • Width: 188 mm
  • ISBN-10: 1119021219
  • Publisher Date: 05 Jun 2015
  • Binding: Paperback
  • Language: English
  • Spine Width: 38 mm
  • Weight: 885 gr


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