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O'Reilly's bestselling book on Linux's bash shell is at it again. Now that Linux is an established player both as a server and on the desktop Learning the bash Shell has been updated and refreshed to account for all the latest changes. Indeed, this third edition serves as the most valuable guide yet to the bash shell.As any good programmer knows, the first thing users of the Linux operating system come face to face with is the shell the UNIX term for a user interface to the system. In other words, it's what lets you communicate with the computer via the keyboard and display. Mastering the bash shell might sound fairly simple but it isn't. In truth, there are many complexities that need careful explanation, which is just what Learning the bash Shell provides.If you are new to shell programming, the book provides an excellent introduction, covering everything from the most basic to the most advanced features. And if you've been writing shell scripts for years, it offers a great way to find out what the new shell offers. Learning the bash Shell is also full of practical examples of shell commands and programs that will make everyday use of Linux that much easier. With this book, programmers will learn:
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Cameron Newham lives in Perth, Western Australia. After completing a Bachelor of Science majoring in information technology and geography at the University of Western Australia, Cameron joined Universal Defence Systems (later to become Australian Defence Industries) as a software engineer. He has been with ADI for six years, working on various aspects of command and control systems. In his spare time Cameron can be found surfing the Internet, ballroom dancing, or driving his sports car. He also has more than a passing interest in space science, 3D graphics, synthesiser music, and Depeche Mode.Contenuti:
Preface; bash Versions; Summary of bash Features; Intended Audience; Code Examples; Chapter Summary; Conventions Used in This Handbook; We'd Like to Hear from You; Using Code Examples; Safari Enabled; Acknowledgments for the First Edition; Acknowledgments for the Second Edition; Acknowledgments for the Third Edition; Chapter 1: bash Basics; 1.1 What Is a Shell?; 1.2 Scope of This Book; 1.3 History of UNIX Shells; 1.4 Getting bash; 1.5 Interactive Shell Use; 1.6 Files; 1.7 Input and Output; 1.8 Background Jobs; 1.9 Special Characters and Quoting; 1.10 Help; Chapter 2: Command-Line Editing; 2.1 Enabling Command-Line Editing; 2.2 The History List; 2.3 emacs Editing Mode; 2.4 vi Editing Mode; 2.5 The fc Command; 2.6 History Expansion; 2.7 readline; 2.8 Keyboard Habits; Chapter 3: Customizing Your Environment; 3.1 The .bash_profile, .bash_logout, and .bashrc Files; 3.2 Aliases; 3.3 Options; 3.4 Shell Variables; 3.5 Customization and Subprocesses; 3.6 Customization Hints; Chapter 4: Basic Shell Programming; 4.1 Shell Scripts and Functions; 4.2 Shell Variables; 4.3 String Operators; 4.4 Command Substitution; 4.5 Advanced Examples: pushd and popd; Chapter 5: Flow Control; 5.1 if/else; 5.2 for; 5.3 case; 5.4 select; 5.5 while and until; Chapter 6: Command-Line Options and Typed Variables; 6.1 Command-Line Options; 6.2 Typed Variables; 6.3 Integer Variables and Arithmetic; 6.4 Arrays; Chapter 7: Input/Output and Command-Line Processing; 7.1 I/O Redirectors; 7.2 String I/O; 7.3 Command-Line Processing; Chapter 8: Process Handling; 8.1 Process IDs and Job Numbers; 8.2 Job Control; 8.3 Signals; 8.4 trap; 8.5 Coroutines; 8.6 Subshells; 8.7 Process Substitution; Chapter 9: Debugging Shell Programs; 9.1 Basic Debugging Aids; 9.2 A bash Debugger; Chapter 10: bash Administration; 10.1 Installing bash as the Standard Shell; 10.2 Environment Customization; 10.3 System Security Features; Chapter 11: Shell Scripting; 11.1 What's That Do?; 11.2 Starting Up; 11.3 Potential Problems; 11.4 Don't Use bash; Chapter 12: bash for Your System; 12.1 Obtaining bash; 12.2 Unpacking the Archive; 12.3 What's in the Archive; 12.4 Who Do I Turn to?; Appendix A: Related Shells; A.1 The Bourne Shell; A.2 The IEEE 1003.2 POSIX Shell Standard; A.3 The Korn Shell; A.4 pdksh; A.5 zsh; A.6 Shell Clones and Unix-like Platforms; Appendix B: Reference Lists; B.1 Invocation; B.2 Prompt String Customizations; B.3 Built-In Commands and Reserved Words; B.4 Built-In Shell Variables; B.5 Test Operators; B.6 set Options; B.7 shopt Options; B.8 I/O Redirection; B.9 emacs Mode Commands; B.10 vi Control Mode Commands; Appendix C: Loadable Built-Ins; Appendix D: Programmable Completion; Colophon;
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