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Table of Contents

  1. Chapter 1 Introduction

    1. Questions and Answers

    2. What Does “Perl” Stand For?

    3. How Can I Get Perl?

    4. How Do I Make a Perl Program?

    5. A Whirlwind Tour of Perl

    6. Exercises

  2. Chapter 2 Scalar Data

    1. Numbers

    2. Strings

    3. Perl’s Built-in Warnings

    4. Scalar Variables

    5. Output with print

    6. The if Control Structure

    7. Getting User Input

    8. The chomp Operator

    9. The while Control Structure

    10. The undefscalar variablesundef Value

    11. The definedfunctionsdefined Function

    12. Exercises

  3. Chapter 3 Lists and Arrays

    1. Accessing Elements of an Array

    2. Special Array Indices

    3. List Literals

    4. List Assignment

    5. Interpolating Arrays into Strings

    6. The foreach Control Structure

    7. Scalar and List Context

    8. <STDIN> in List Context

    9. Exercises

  4. Chapter 4 Subroutines

    1. Defining a Subroutine

    2. Invoking a Subroutine

    3. Return Values

    4. Arguments

    5. Private Variables in Subroutines

    6. Variable-Length Parameter Lists

    7. Notes on Lexical (my) Variables

    8. The use strictpragmasuse strict Pragma

    9. The returnoperatorsreturn Operator

    10. Non-Scalar Return Values

    11. Exercises

  5. Chapter 5 Input and Output

    1. Input from Standard Input

    2. Input from the Diamond Operator

    3. The Invocation Arguments

    4. Output to Standard Output

    5. Formatted Output with printf

    6. Filehandles

    7. Opening a Filehandle

    8. Fatal Errors with die

    9. Using Filehandles

    10. Reopening a Standard Filehandle

    11. Exercises

  6. Chapter 6 Hashes

    1. What Is a Hash?

    2. Hash Element Access

    3. Hash Functions

    4. Typical Use of a Hash

    5. Exercises

  7. Chapter 7 In the World of Regular Expressions

    1. What Are Regular Expressions?

    2. Using Simple Patterns

    3. Character Classes

    4. Exercises

  8. Chapter 8 Matching with Regular Expressions

    1. Matches with m//

    2. Option Modifiers

    3. Anchors

    4. The Binding Operator, =~

    5. Interpolating into Patterns

    6. The Match Variables

    7. General Quantifiers

    8. Precedence

    9. A Pattern Test Program

    10. Exercises

  9. Chapter 9 Processing Text with Regular Expressions

    1. Substitutions with s///

    2. The split Operator

    3. The joinfunctionsjoin Function

    4. m// inlist contextm// in List Context

    5. More Powerful Regular Expressions

    6. Exercises

  10. Chapter 10 More Control Structures

    1. The unlesscontrol structuresunless Control Structure

    2. The untilcontrol structuresuntil Control Structure

    3. Expression Modifiers

    4. The Naked Block Control Structure

    5. The elsif Clause

    6. Autoincrement and Autodecrement

    7. The forcontrol structuresfor Control Structure

    8. Loop Controls

    9. Logical Operators

    10. Exercise

  11. Chapter 11 File Tests

    1. File Test Operators

    2. The statfunctionsstat and lstatfunctionslstat Functions

    3. The localtimefunctionslocaltime Function

    4. Bitwise Operators

    5. Using the Special Underscore Filehandle

    6. Exercises

  12. Chapter 12 Directory Operations

    1. Moving Around the Directory Tree

    2. Globbing

    3. An Alternate Syntax for Globbing

    4. Directory Handles

    5. Recursive Directory Listing

    6. Manipulating Files and Directories

    7. Removing Files

    8. Renaming Files

    9. Links and Files

    10. Making and Removing Directories

    11. Modifying Permissions

    12. Changing Ownership

    13. Changing Timestamps

    14. Exercises

  13. Chapter 13 Strings and Sorting

    1. Finding a Substring with index

    2. Manipulating a Substring with substr

    3. Formatting Data with sprintf

    4. Advanced Sorting

    5. Exercises

  14. Chapter 14 Process Management

    1. The system Function

    2. The execfunctionsexec Function

    3. The Environment Variables

    4. Using Backquotes to Capture Output

    5. Processes as Filehandles

    6. Getting Down and Dirty with fork

    7. Sending and Receiving Signals

    8. Exercises

  15. Chapter 15 Perl Modules

    1. Finding Modules

    2. Installing Modules

    3. Using Simple Modules

    4. Exercise

  16. Chapter 16 Some Advanced Perl Techniques

    1. Trapping Errors with eval

    2. Picking Items from a List with grep

    3. Transforming Items from a List with map

    4. Unquoted Hash Keys

    5. Slices

    6. Exercise

  1. Appendix Exercise Answers

    1. Answers to Chapter 2 Exercises

    2. Answers to Chapter 3 Exercises

    3. Answers to Chapter 4 Exercises

    4. Answers to Chapter 5 Exercises

    5. Answers to Chapter 6 Exercises

    6. Answers to Chapter 7 Exercises

    7. Answers to Chapter 8 Exercises

    8. Answers to Chapter 9 Exercises

    9. Answer to Chapter 10 Exercise

    10. Answers to Chapter 11 Exercises

    11. Answers to Chapter 12 Exercises

    12. Answers to Chapter 13 Exercises

    13. Answers to Chapter 14 Exercises

    14. Answer to Chapter 15 Exercise

    15. Answer to Chapter 16 Exercise

  2. Appendix Beyond the Llama

    1. Further Documentation

    2. Regular Expressions

    3. Packages

    4. Extending Perl’s Functionality

    5. Some Important Modules

    6. Pragmas

    7. Databases

    8. Other Operators and Functions

    9. Mathematics

    10. Lists and Arrays

    11. Bits and Pieces

    12. Formats

    13. Networking and IPC

    14. Security

    15. Debugging

    16. The Common Gateway Interface (CGI)

    17. Command-Line Options

    18. Built-in Variables

    19. Syntax Extensions

    20. References

    21. Tied Variables

    22. Operator Overloading

    23. Dynamic Loading

    24. Embedding

    25. Converting Other Languages to Perl

    26. Converting find Command Lines to Perl

    27. Command-Line Options in Your Programs

    28. Embedded Documentation

    29. More Ways to Open Filehandles

    30. Locales and Unicode

    31. Threads and Forking

    32. Graphical User Interfaces (GUIs)

    33. And More . . .

  3. Colophon