How-to guides

How-to guides are task-oriented: each one shows how to solve a specific problem. They assume you already know the basics — if not, start with the tutorial.

• Add options — string and boolean flags, shorthands, defaults, and optional options.
• Add arguments — positional arguments and how they map into args.
• Add subcommands — nest commands to any depth.
• Set a default command — run a command when none is given.
• Share global options — options inherited by subcommands.
• Generate shell completion — ship a bash completion script.
• Compile a standalone binary — turn your CLI into a single executable with Bun.