Advanced Bash Scripting Guide

• Table of Contents
• Chapter 1. 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
  • 5.1. Quoting Variables
  • 5.2. Escaping
• 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
  • 8.3. The Double-Parentheses Construct
  • 8.4. Operator Precedence
• Part 3. Beyond the Basics
• Chapter 9. Another Look at Variables
  • 9.1. Internal Variables
  • 9.2. Typing variables: declare or typeset
    • 9.2.1. Another use for declare
  • 9.3. $RANDOM: generate random integer
• Chapter 10. Manipulating Variables
  • 10.1. Manipulating Strings
    • 10.1.1. Manipulating strings using awk
    • 10.1.2. Further Reference
  • 10.2. Parameter Substitution
• Chapter 11. Loops and Branches
  • 11.1. Loops
  • 11.2. Nested Loops
  • 11.3. Loop Control
  • 11.4. Testing and Branching
• Chapter 12. Command Substitution
• Chapter 13. Arithmetic Expansion
• Chapter 14. Recess Time
• Part 4. Commands
• Chapter 15. Internal Commands and Builtins
  • 15.1. Job Control Commands
• Chapter 16. External Filters, Programs and Commands
  • 16.1. Basic Commands
  • 16.2. Complex Commands
  • 16.3. Time / Date Commands
  • 16.4. Text Processing Commands
  • 16.5. File and Archiving Commands
  • 16.6. Communications Commands
  • 16.7. Terminal Control Commands
  • 16.8. Math Commands
  • 16.9. Miscellaneous Commands
• Chapter 17. System and Administrative Commands
  • 17.1. Analyzing a System Script
• Part 5. Advanced Topics
• Chapter 18. Regular Expressions
  • 18.1. A Brief Introduction to Regular Expressions
  • 18.2. Globbing
• Chapter 19. Here Documents
  • 19.1. Here Strings
• Chapter 20. I/O Redirection
  • 20.1. Using exec
  • 20.2. Redirecting Code Blocks
  • 20.3. Applications
• Chapter 21. Subshells
• Chapter 22. Restricted Shells
• Chapter 23. Process Substitution
• Chapter 24. Functions
  • 24.1. Complex Functions and Function Complexities
  • 24.2. Local Variables
    • 24.2.1. Local variables and recursion.
  • 24.3. Recursion Without Local Variables
• Chapter 25. Aliases
• Chapter 26. List Constructs
• Chapter 27. Arrays
• Chapter 28. Indirect References
• Chapter 29. /dev and /proc
  • 29.1. /dev
  • 29.2. /proc
• Chapter 30. Network Programming
• Chapter 31. Of Zeros and Nulls
• Chapter 32. Debugging
• Chapter 33. Options
• Chapter 34. Gotchas
• Chapter 35. Scripting With Style
  • 35.1. Unofficial Shell Scripting Stylesheet
• Chapter 36. Miscellany
  • 36.1. Interactive and non-interactive shells and scripts
  • 36.2. Shell Wrappers
  • 36.3. Tests and Comparisons: Alternatives
  • 36.4. Recursion: a script calling itself
  • 36.5. "Colorizing" Scripts
  • 36.6. Optimizations
  • 36.7. Assorted Tips
    • 36.7.1. Ideas for more powerful scripts
    • 36.7.2. Widgets
  • 36.8. Security Issues
    • 36.8.1. Infected Shell Scripts
    • 36.8.2. Hiding Shell Script Source
    • 36.8.3. Writing Secure Shell Scripts
  • 36.9. Portability Issues
    • 36.9.1. A Test Suite
  • 36.10. Shell Scripting Under Windows
• Chapter 37. Bash, versions 2, 3, and 4
  • 37.1. Bash, version 2
  • 37.2. Bash, version 3
    • 37.2.1. Bash, version 3.1
    • 37.2.2. Bash, version 3.2
  • 37.3. Bash, version 4
    • 37.3.1. Bash, version 4.1
    • 37.3.2. Bash, version 4.2
• Chapter 38. Endnotes
  • 38.1. Author's Note
  • 38.2. About the Author
  • 38.3. Where to Go For Help
  • 38.4. Tools Used to Produce This Book
    • 38.4.1. Hardware
    • 38.4.2. Software and Printware
  • 38.5. Credits
  • 38.6. Disclaimer
• 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. Parsing and Managing Pathnames
• Appendix E. Exit Codes With Special Meanings
• Appendix F. A Detailed Introduction to I/O and I/O Redirection
• Appendix G. Command-Line Options
  • G.1. Standard Command-Line Options
  • G.2. Bash Command-Line Options
• Appendix H. Important Files
• Appendix I. Important System Directories
• Appendix J. An Introduction to Programmable Completion
• Appendix K. Localization
• Appendix L. History Commands
• Appendix M. Sample .bashrc and .bash_profile Files
• Appendix N. Converting DOS Batch Files to Shell Scripts
• Appendix O. Exercises
  • O.1. Analyzing Scripts
  • O.2. Writing Scripts
• Appendix P. Revision History
• Appendix Q. Download and Mirror Sites
• Appendix R. To Do List
• Appendix S. Copyright
• Appendix T. ASCII Table
  • Index
    • Notes