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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
Acknowledgments for the First Edition
Acknowledgments for the Second Edition
Chapter 1. bash Basics
What Is a Shell?
Scope of This Book
History of UNIX Shells
Getting bash
Interactive Shell Use
Files
Input and Output
Background Jobs
Special Characters and Quoting
Help
Chapter 2. Command-Line Editing
Enabling Command-Line Editing
The History File
emacs Editing Mode
vi Editing Mode
The fc Command
History Expansion
readline
Keyboard Habits
Chapter 3. Customizing Your Environment
The .bash_profile, .bash_logout, and .bashrc Files
Aliases
Options
Shell Variables
Customization and Subprocesses
Customization Hints
Chapter 4. Basic Shell Programming
Shell Scripts and Functions
Shell Variables
String Operators
Command Substitution
Advanced Examples: pushd and popd
Chapter 5. Flow Control
if/else
for
case
select
while and until
Chapter 6. Command-Line Options and Typed Variables
Command-Line Options
Typed Variables
Integer Variables and Arithmetic
Arrays
Chapter 7. Input/Output and Command-Line Processing
I/O Redirectors
String I/O
Command-Line Processing
Chapter 8. Process Handling
Process IDs and Job Numbers
Job Control
Signals
trap
Coroutines
Subshells
Process Substitution
Chapter 9. Debugging Shell Programs
Basic Debugging Aids
A bash Debugger
Chapter 10. bash Administration
Installing bash as the Standard Shell
Environment Customization
System Security Features
Chapter 11. bash for Your System
Obtaining bash
Unpacking the Archive
What´s in the Archive
Who Do I Turn to?
Appendix A. Related Shells
The Bourne Shell
The IEEE 1003.2 POSIX Shell Standard
The Korn Shell
pdksh
Workalikes on PC Platforms
Appendix B. Reference Lists
Invocation
Built-In Commands and Reserved Words
Environment Variables
Test Operators
set Options
shopt Options
I/O Redirection
emacs Mode Commands
vi Control Mode Commands
Appendix C. Loadable Built-Ins
Appendix D. Syntax
Reserved Words
BNF for bash
Appendix E. Obtaining Sample Programs
FTP
FTPMAIL
Colophon