Getting Started

• Bash Script Header
• Making Scripts Executable
• Putting Scripts in Your Path

Style and Design Strategy

• Bash Scripting Style
• Indentation in Bash
• Top-Down Design

Useful Helpers

• ShellCheck - just use it always
• Boilerplate
• Pure Bash Bible

Variables and Constants

• Variables in Bash
• Scoping in Bash

Redirection

• Here Documents
• 20220406080732-here-strings

Functions

• Functions in Bash

Flow Control

• if/then Constructs
• test Builtin
• Extended test
• File Tests
• Integer Comparison
• String Comparison
• Logical Operators
• Control Operators

Looping

• while
• until
• File-Redirection and Looping
• for Loops
• for: C Language Form

Branching

• case

Exit Status

• Exit Status

Interactivity

• read Builtin
• Input Validation
• Menus

IFS

• Internal Field Separator

Troubleshooting

• Troubleshooting Strategies
• Defensive Programming
• Verify Input
• Testing
• Debugging

See also

• Use Bash Strict Mode

Parameters

• Positional Parameters
• Special Parameters
• Basic Parameters

Parameter Expansion

• Parameter Expansion
• Manage Empty Variables
• Variable Name Expansion
• String Operations
• Case Modification

Arithmetic Evaluation and Expansion

• Arithmetic Evaluation
• Arithmetic Expressions

Operators

• Unary Operators
• Arithmetic Operators
• Assignment and Increment/Decrement Operators
• Bit Operations
• Logical and Comparison Operators

Advanced Arithmetic in the Shell

See: bc

Arrays

• Arrays
• Creating Arrays
• Array Indexing
• Array Operations
• Associative Arrays

Grouping Commands

• Grouping Commands
• Process Substitution

Traps

• trap Builtin

Temporary Files

• Temporary Files

Asynchronous Execution

• wait Builtin

Named Pipes

• Named Pipes