shell

type Shell interface {
	Run(buf io.Writer, err io.Writer, args []string)
	Add(prefix string, cmd ...shlcmd.Command)
	Get(cmd string) []shlcmd.Command
	Desc(cmd string) map[string]string
	Walk(fct func(name string, item shlcmd.Command) (shlcmd.Command, liberr.Error)) liberr.Error

	//go prompt
	RunPrompt(out, err io.Writer, opt ...libshl.Option)
}