Advanced Bash Scripting Guide

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Table of Contents
Chapter 1. Why Shell Programming?
Chapter 2. Starting Off With a Sha-Bang
- 2.1. Invoking the script
- 2.2. Preliminary Exercises
Part 2. Basics
Chapter 3. Special Characters
Chapter 4. Introduction to Variables and Parameters
- 4.1. Variable Substitution
- 4.2. Variable Assignment
- 4.3. Bash Variables Are Untyped
- 4.4. Special Variable Types
Chapter 5. Quoting
Chapter 6. Exit and Exit Status
Chapter 7. Tests
- 7.1. Test Constructs
- 7.2. File test operators
- 7.3. Other Comparison Operators
- 7.4. Nested if/then Condition Tests
- 7.5. Testing Your Knowledge of Tests
Chapter 8. Operations and Related Topics
- 8.1. Operators
- 8.2. Numerical Constants
Part 3. Beyond the Basics
Chapter 9. Variables Revisited
- 9.1. Internal Variables
- 9.2. Manipulating Strings
  - 9.2.1. Manipulating strings using awk
  - 9.2.2. Further Discussion
- 9.3. Parameter Substitution
- 9.4. Typing variables: declare or typeset
- 9.5. Indirect References to Variables
- 9.6. $RANDOM: generate random integer
- 9.7. The Double Parentheses Construct
Chapter 10. Loops and Branches
- 10.1. Loops
- 10.2. Nested Loops
- 10.3. Loop Control
- 10.4. Testing and Branching
Chapter 11. Internal Commands and Builtins
- 11.1. Job Control Commands
Chapter 12. External Filters, Programs and Commands
- 12.1. Basic Commands
- 12.2. Complex Commands
- 12.3. Time / Date Commands
- 12.4. Text Processing Commands
- 12.5. File and Archiving Commands
- 12.6. Communications Commands
- 12.7. Terminal Control Commands
- 12.8. Math Commands
- 12.9. Miscellaneous Commands
Chapter 13. System and Administrative Commands
Chapter 14. Command Substitution
Chapter 15. Arithmetic Expansion
Chapter 16. I/O Redirection
- 16.1. Using exec
- 16.2. Redirecting Code Blocks
- 16.3. Applications
Chapter 17. Here Documents
- 17.1. Here Strings
Chapter 18. Recess Time
Part 4. Advanced Topics
Chapter 19. Regular Expressions
- 19.1. A Brief Introduction to Regular Expressions
- 19.2. Globbing
Chapter 20. Subshells
Chapter 21. Restricted Shells
Chapter 22. Process Substitution
Chapter 23. Functions
- 23.1. Complex Functions and Function Complexities
- 23.2. Local Variables
  - 23.2.1. Local variables help make recursion possible.
- 23.3. Recursion Without Local Variables
Chapter 24. Aliases
Chapter 25. List Constructs
Chapter 26. Arrays
Chapter 27. Files
Chapter 28. /dev and /proc
- 28.1. /dev
- 28.2. /proc
Chapter 29. Of Zeros and Nulls
Chapter 30. Debugging
Chapter 31. Options
Chapter 32. Gotchas
Chapter 33. Scripting With Style
- 33.1. Unofficial Shell Scripting Stylesheet
Chapter 34. Miscellany
- 34.1. Interactive and non-interactive shells and scripts
- 34.2. Shell Wrappers
- 34.3. Tests and Comparisons: Alternatives
- 34.4. Recursion
- 34.5. "Colorizing" Scripts
- 34.6. Optimizations
- 34.7. Assorted Tips
- 34.8. Security Issues
- 34.9. Portability Issues
- 34.10. Shell Scripting Under Windows
Chapter 35. Bash, versions 2 and 3
- 35.1. Bash, version2
- 35.2. Bash, version3
Chapter 36. Endnotes
- 36.1. Author's Note
- 36.2. About the Author
- 36.3. Where to Go For Help
- 36.4. Tools Used to Produce This Book
  - 36.4.1. Hardware
  - 36.4.2. Software and Printware
- 36.5. Credits
Bibliography
Appendix A. Contributed Scripts
Appendix B. Reference Cards
Appendix C. A Sed and Awk Micro-Primer
- C.1. Sed
- C.2. Awk
Appendix D. Exit Codes With Special Meanings
Appendix E. A Detailed Introduction to I/O and I/O Redirection
Appendix F. Standard Command-Line Options
Appendix G. Important System Directories
Appendix H. Localization
Appendix I. History Commands
Appendix J. A Sample .bashrc File
Appendix K. Converting DOS Batch Files to Shell Scripts
Appendix L. Exercises
- L.1. Analyzing Scripts
- L.2. Writing Scripts
Appendix M. Revision History
Appendix N. Mirror Sites
Appendix O. To Do List
Appendix P. Copyright
- Notes

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