tldr/pages/linux/getopt.md

getopt

Parse command-line arguments. More information: https://manned.org/getopt.

• Parse optional verbose/version flags with shorthands:

getopt {{[-o|--options]}} vV {{[-l|--longoptions]}} verbose,version -- --version --verbose

• Add a --file option with a required argument with shorthand -f:

getopt {{[-o|--options]}} f: {{[-l|--longoptions]}} file: -- --file=somefile

• Add a --verbose option with an optional argument with shorthand -v, and pass a non-option parameter arg:

getopt {{[-o|--options]}} v:: {{[-l|--longoptions]}} verbose:: -- --verbose arg

• Accept a -r and --verbose flag, a --accept option with an optional argument and add a --target with a required argument option with shorthands:

getopt {{[-o|--options]}} rv::s::t: {{[-l|--longoptions]}} verbose,source::,target: -- -v --target target