Method Usage

command.go:478–480

Usage puts out the usage for the command. Used when a user provides invalid input. Can be defined by user by overriding UsageFunc.

()

// Used when a user provides invalid input.
// Can be defined by user by overriding UsageFunc.
func (c *Command) Usage() error {
	return c.UsageFunc()(c)
}

// HelpFunc returns either the function set by SetHelpFunc for this command
// or a parent, or it returns a function with default help behavior.