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