Apple macOS How-to guides and examples

Arguments Shell parameters.

Variables Local and Environment variables.

List of Environment variables.

List of Special bash shell variables.

Array Variables Define a Function Macro.

Functions Use shell functions to group commands.

Redirection Redirect output from one command as input for another.

Looping constructs:

if then else Conditionally perform a command.

for Expand words, and execute commands.

while Execute commands.

break and continue Control loop execution.

Evaluating expressions:

Arithmetic expressions.

Using brackets to Group and expand expressions.

Logical, arithmetical and comparison operators.

Conditional execution command-A AND/OR command-B.

Comparison Operators exists, greater than, equal to.

Shell expansion.

Escape Characters, delimiters and Quotes.

File operators -f

Command Substitution.

Wildcard Pattern matching.

Working with the Shell:

Run a macOS shell script.

Run a script at startup/login.

bash Prompt Statement variables.

macOS startup files .zprofile and .bash_profile

Here documents and Here Strings.

strftime Date and time string formats.

General macOS

Keyboard Shortcuts - bash Terminal.

Keyboard Shortcuts - macOS.

Key Bindings - Change the action of keys.

Create a bootable MacOS drive.

Defaults - A list of macOS preferences.

macOS Root user - How to Enable/Disable.

macOS Filesystem hierarchy.

Valid Filenames in macOS.

macOS versions.

Related:

See also: Websites, Books, Apps & Utilities for macOS.