Linux Essentials, 2nd Edition

✍ Scribed by Bresnahan, Christine;Blum, Richard

• Publisher: Sybex; John Wiley & Sons
• Year: 2017;2015
• Tongue: English
• Leaves: 363
• Edition: 2
• Category: Library

✦ Synopsis

Learn Linux, and take your career to the next level!Linux Essentials, 2nd Editionprovides a solid foundation of knowledge for anyone considering a career in information technology, for anyone new to the Linux operating system, and for anyone who is preparing to sit for the Linux Essentials Exam. Through this engaging resource, you can access key information in a learning-by-doing style. Hands-on tutorials and end-of-chapter exercises and review questions lead you in both learning and applying new information--information that will help you achieve your goals! With the experience provided in this compelling reference, you can sit down for the Linux Essentials Exam with confidence.

An open source operating system, Linux is a UNIX-based platform that is freely updated by developers. The nature of its development means that Linux is a low-cost and secure alternative to other operating systems, and is used in many different IT environments. Passing the Linux Essentials Exam prepares you to apply your knowledge regarding this operating system within the workforce.

Access lessons that are organized by task, allowing you to quickly identify the topics you are looking for and navigate the comprehensive information presented by the book Discover the basics of the Linux operating system, including distributions, types of open source applications, freeware, licensing, operations, navigation, and more Explore command functions, including navigating the command line, turning commands into scripts, and more Identify and create user types, users, and groupsLinux Essentials, 2nd Editionis a critical resource for anyone starting a career in IT or anyone new to the Linux operating system.

✦ Table of Contents

LINUX® ESSENTIALS......Page 3
Acknowledgments......Page 7
About the Authors......Page 8
Contents at a Glance......Page 9
Contents......Page 10
What Is Linux?......Page 13
Who Should Read This Book?......Page 14
System Requirements......Page 15
How This Book Is Organized......Page 16
Conventions Used in This Book......Page 18
What Is an OS?......Page 21
What Else Identifies an OS?......Page 22
Using a Text-Mode User Interface......Page 24
Using a Graphical User Interface......Page 26
Comparing Linux to Unix......Page 28
Comparing Linux to Mac OS X......Page 29
Comparing Linux to Windows......Page 31
Creating a Complete Linux-Based OS......Page 33
Exploring Common Linux Distributions......Page 34
Understanding Release Cycles......Page 37
Investigating Software Licenses......Page 41
Using Licenses to Modify Copyright Terms......Page 42
Understanding the FSF Philosophy......Page 44
Examining Free Software and the GPL......Page 45
Understanding the Open Source Philosophy......Page 46
Defining Open Source Software......Page 48
Looking at the Creative Commons......Page 49
Understanding Open Source Licenses......Page 50
Understanding Open Source Business Models......Page 52
Exploring Linux through the Ages......Page 55
Understanding Linux’s Origins......Page 56
Understanding Basic Open Source Principles......Page 58
Linux as a Software Integrator......Page 60
Embedded Computers......Page 61
Desktop and Laptop Computers......Page 62
Server Computers......Page 63
Using a Linux Desktop Environment......Page 67
Choosing a Desktop Environment......Page 68
Launching Programs......Page 70
Using a File Manager......Page 72
Finding the Right Tool for the Job......Page 75
Using a Web Browser......Page 76
Using Office Tools......Page 78
Using Multimedia Applications......Page 79
Using Linux for Cloud Computing......Page 80
Using Mobile Applications......Page 81
Identifying Common Server Protocols and Programs......Page 82
Focusing on Web Servers......Page 85
Installing and Launching Servers......Page 86
Securing Servers......Page 87
Choosing a Compiled vs. an Interpreted Language......Page 88
Identifying Common Programming Languages......Page 90
Understanding Software Packages......Page 91
Identifying Common Package Tools......Page 92
Learning about Your CPU......Page 95
Understanding CPU Families......Page 96
Identifying Motherboard Capabilities......Page 98
Sizing Your Power Supply......Page 100
Understanding Disk Interfaces......Page 101
Partitioning a Disk......Page 102
Understanding Filesystem Issues......Page 105
Using Removable and Optical Disks......Page 108
Managing Displays......Page 109
Understanding the Role of X......Page 110
Using Common Display Hardware......Page 111
Handling USB Devices......Page 113
Understanding Types of Drivers......Page 114
Locating and Installing Drivers......Page 115
Starting a Command Line......Page 119
Launching a Terminal......Page 120
Logging into a Text-Mode Console......Page 123
Running Text-Mode Programs......Page 124
Running Programs in the Background......Page 126
Using Command Completion......Page 127
Using Command History......Page 128
Understanding the Purpose of man Pages......Page 130
Locating man Pages by Section Number......Page 131
Reading man Pages......Page 132
Using less......Page 134
Understanding the Purpose of info Pages......Page 137
Reading info Pages......Page 138
Locating Program Documentation on Your Computer......Page 140
Consulting Experts......Page 143
Understanding Where Things Go......Page 147
User Files vs. System Files......Page 148
The Filesystem Hierarchy Standard......Page 149
Important Directories and Their Contents......Page 150
Obtaining File Listings......Page 153
Changing Directories......Page 155
Using Absolute and Relative File References......Page 156
Manipulating Files......Page 157
Creating Files......Page 158
Copying Files......Page 159
Moving and Renaming Files......Page 160
Using Links......Page 161
Using Wildcards......Page 163
Understanding Case Sensitivity......Page 164
Deleting Directories......Page 165
Managing Directories......Page 167
Using Regular Expressions......Page 171
Searching for and Extracting Data......Page 173
Using grep......Page 174
Using find......Page 175
Using wc......Page 177
Using sort......Page 178
Using cat......Page 180
Using Basic Redirection Operators......Page 181
Using Pipes......Page 183
Generating Command Lines......Page 184
Using tar......Page 186
Using Compression......Page 189
Using zip......Page 190
Linux Package Management Principles......Page 195
Understanding Package Systems......Page 196
Managing Red Hat Systems......Page 198
Managing Debian Systems......Page 199
Understanding the Process Hierarchy......Page 201
Using ps to Identify Processes......Page 202
Using top to Identify Processes......Page 203
Measuring Memory Use......Page 205
Locating Log Files......Page 207
Examining the Kernel Ring Buffer......Page 209
Understanding the Role of Text Files......Page 213
Choosing an Editor......Page 215
Launching an Editor......Page 216
Exploring Basic nano Text-Editing Procedures......Page 218
Saving Your Changes from nano......Page 221
Understanding vi Modes......Page 222
Exploring Basic vi Text-Editing Procedures......Page 224
Saving Your Changes from vi......Page 227
CHAPTER 11 Creating Scripts......Page 231
Using Commands......Page 232
Using Arguments......Page 235
Using Variables......Page 236
Using Conditional Expressions......Page 239
Using Loops......Page 240
Using Functions......Page 241
Setting the Script’s Exit Value......Page 243
Understanding Accounts......Page 247
Understanding Account Features......Page 248
Identifying Accounts......Page 251
Understanding Groups......Page 253
Discovering Your Own Identity......Page 254
Learning Who’s Online......Page 255
Working as root......Page 257
Acquiring root Privileges......Page 258
Using root Privileges Safely......Page 261
Deciding on a Group Strategy......Page 265
Selecting a Good Password......Page 266
Creating Accounts Using GUI Tools......Page 269
Creating Accounts from the Shell......Page 271
Deciding When to Modify Accounts......Page 273
Checking for Logged-in Users......Page 274
Modifying Accounts Using GUI Tools......Page 275
Modifying Accounts from the Shell......Page 277
Avoiding Account-Deletion Pitfalls......Page 279
Deleting Accounts Using GUI Tools......Page 280
Deleting Accounts from the Shell......Page 281
Managing Groups Using GUI Tools......Page 282
Managing Groups from the Shell......Page 283
Setting Ownership......Page 287
Understanding Ownership......Page 288
Setting Ownership in a File Manager......Page 289
Setting Ownership in a Shell......Page 290
Setting Permissions......Page 291
Understanding Permissions......Page 292
Setting Permissions in a Shell......Page 296
Setting the umask......Page 297
Using Sticky Bits......Page 298
Using Special Execute Permissions......Page 300
Hiding Files from View......Page 301
Viewing Directories......Page 302
Understanding Network Features......Page 305
Configuring a Network Connection......Page 307
Deciding Whether to Use DHCP......Page 308
Creating a Wi-Fi Connection......Page 309
Using a Network Configuration GUI......Page 313
Using Text-Based Tools......Page 315
Testing Basic Connectivity......Page 319
Finding Breaks in Connectivity......Page 320
Checking Your Network Status......Page 322
Protecting Your System from the Bad Guys......Page 323
APPENDIX A Answers to Review Questions......Page 327
The Linux Essentials Certification......Page 347
Certification Objectives Map......Page 348
Index......Page 351
EULA......Page 363

✦ Subjects

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