章节目录
Copyright 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 Section 1.1. What Is a Shell? Section 1.2. Scope of This Book Section 1.3. History of UNIX Shells Section 1.4. Getting bash Section 1.5. Interactive Shell Use Section 1.6. Files Section 1.7. Input and Output Section 1.8. Background Jobs Section 1.9. Special Characters and Quoting Section 1.10. Help Chapter 2. Command-Line Editing Section 2.1. Enabling Command-Line Editing Section 2.2. The History List Section 2.3. emacs Editing Mode Section 2.4. vi Editing Mode Section 2.5. The fc Command Section 2.6. History Expansion Section 2.7. readline Section 2.8. Keyboard Habits Chapter 3. Customizing Your Environment Section 3.1. The .bash_profile, .bash_logout, and .bashrc Files Section 3.2. Aliases Section 3.3. Options Section 3.4. Shell Variables Section 3.5. Customization and Subprocesses Section 3.6. Customization Hints Chapter 4. Basic Shell Programming Section 4.1. Shell Scripts and Functions Section 4.2. Shell Variables Section 4.3. String Operators Section 4.4. Command Substitution Section 4.5. Advanced Examples: pushd and popd Chapter 5. Flow Control Section 5.1. if/else Section 5.2. for Section 5.3. case Section 5.4. select Section 5.5. while and until Chapter 6. Command-Line Options and Typed Variables Section 6.1. Command-Line Options Section 6.2. Typed Variables Section 6.3. Integer Variables and Arithmetic Section 6.4. Arrays Chapter 7. Input/Output and Command-Line Processing Section 7.1. I/O Redirectors Section 7.2. String I/O Section 7.3. Command-Line Processing Chapter 8. Process Handling Section 8.1. Process IDs and Job Numbers Section 8.2. Job Control Section 8.3. Signals Section 8.4. trap Section 8.5. Coroutines Section 8.6. Subshells Section 8.7. Process Substitution Chapter 9. Debugging Shell Programs Section 9.1. Basic Debugging Aids Section 9.2. A bash Debugger Chapter 10. bash Administration Section 10.1. Installing bash as the Standard Shell Section 10.2. Environment Customization Section 10.3. System Security Features Chapter 11. Shell Scripting Section 11.1. What's That Do? Section 11.2. Starting Up Section 11.3. Potential Problems Section 11.4. Don't Use bash Chapter 12. bash for Your System Section 12.1. Obtaining bash Section 12.2. Unpacking the Archive Section 12.3. What's in the Archive Section 12.4. Who Do I Turn to? Appendix A. Related Shells Section A.1. The Bourne Shell Section A.2. The IEEE 1003.2 POSIX Shell Standard Section A.3. The Korn Shell Section A.4. pdksh Section A.5. zsh Section A.6. Shell Clones and Unix-like Platforms Appendix B. Reference Lists Section B.1. Invocation Section B.2. Prompt String Customizations Section B.3. Built-In Commands and Reserved Words Section B.4. Built-In Shell Variables Section B.5. Test Operators Section B.6. set Options Section B.7. shopt Options Section B.8. I/O Redirection Section B.9. emacs Mode Commands Section B.10. vi Control Mode Commands Appendix C. Loadable Built-Ins Appendix D. Programmable Completion Colophon Index
内容简介
This refreshed edition serves as the most valuable guide yet to the bash shell. It's full of practical examples of shell commands and programs guaranteed to make everyday use of Linux that much easier. Includes information on key bindings, command line editing and processing, integrated programming features, signal handling, and much more! 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: * How to install bash as your login shell * The basics of interactive shell use, including UNIX file and directory structures, standard I/O, and background jobs * Command line editing, history substitution, and key bindings * How to customize your shell environment without programming * The nuts and bolts of basic shell programming, flow control structures, command-line options and typed variables * Process handling, from job control to processes, coroutines and subshells * Debugging techniques, such as trace and verbose modes * Techniques for implementing system-wide shell customization and features related to system security
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