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| Introduction | |
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| Introduction to UNIX and Shell Tools | |
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| Shell Basics | |
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| What Is a Command? | |
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| What Is the Shell? | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Script Basics | |
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| The UNIX System | |
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| Shell Modes and Initialization | |
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| Getting Help | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Working with Files | |
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| Listing Files | |
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| File Contents | |
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| Manipulating Files | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Working with Directories | |
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| The Directory Tree | |
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| Switching Directories | |
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| Listing Files and Directories | |
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| Manipulating Directories | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Input and Output | |
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| Output | |
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| Input | |
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| File Descriptors | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Manipulating File Attributes | |
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| File Types | |
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| Owners, Groups, and Permissions | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Processes | |
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| Starting a Process | |
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| Listing and Terminating Processes | |
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| Parent and Child Processes | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Shell Programming | |
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| Variables | |
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| Working with Variables | |
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| Environment and Shell Variables | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Substitution | |
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| Filename Substitution (Globbing) | |
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| Variable Substitution | |
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| Command and Arithmetic Substitution | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Quoting | |
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| Quoting with Backslashes | |
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| Using Single Quotes | |
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| Using Double Quotes | |
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| Quoting Rules and Situations | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Flow Control | |
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| The if Statement | |
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| The case Statement | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Loops | |
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| The while Loop | |
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| The for and select Loops | |
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| Loop Control | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Parameters | |
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| Special Variables | |
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| Options and Arguments | |
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| Option Parsing in Shell Scripts | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Functions | |
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| Using Functions | |
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| Understanding Scope, Recursion, Return Codes, and Data Sharing | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Text Filters | |
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| The head and tail Commands | |
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| Using grep | |
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| Counting Words | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Filtering Text with Regular Expressions | |
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| The Basics of awk and sed | |
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| Using sed | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Filtering Text with awk | |
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| What Is awk? | |
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| Using awk Features | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Other Tools | |
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| The Built-In Commands | |
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| The sleep Command | |
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| The find Command | |
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| xargs | |
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| The expr Command | |
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| The bc Command | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Advanced Topics | |
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| Signals | |
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| How Are Signals Represented? | |
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| Dealing with Signals | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Debugging | |
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| Enabling Debugging | |
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| Using Syntax Checking | |
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| Shell Tracing | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Problem Solving with Functions | |
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| Library Basics | |
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| Creating a Library | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Problem Solving with Shell Scripts | |
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| Startup Scripts | |
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| Maintaining an Address Book | |
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| Summary | |
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| Questions | |
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| Terms | |
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| Scripting for Portability | |
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| Determining UNIX Versions | |
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| Techniques for Increasing Portability | |
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| Summary | |
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| Question | |
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| Terms | |
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| Shell Programming FAQs | |
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| Shell and Command Questions | |
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| Variable and Argument Questions | |
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| File and Directory Questions | |
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| Summary | |
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| Appendixes | |
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| Command Quick Reference | |
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| Reserved Words and Built-in | |
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| Conditional Expressions | |
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| Arithmetic Expressions (ksh, bash, and zsh Only) | |
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| Parameters and Variables | |
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| Input/Output | |
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| Pattern Matching and Regular Expressions | |
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| Glossary | |
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| Answers to Questions | |
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| Shell Function Library | |
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| Index | |