Cli 参数格式建议

square brackets [optional option] angle brackets <required argument> curly braces {default values} parenthesis (miscellaneous info)

Text without brackets or braces Items you must type as shown. <Text inside angle brackets> Placeholder for which you must supply a value. [Text inside square brackets] Optional items. {Text inside braces} Set of required items. You must choose one. Vertical bar (|) Separator for mutually exclusive items. You must choose one. Ellipsis (…) Items that can be repeated and used multiple times.