command

type Command interface {
	PrintableCommandArgs() string
	Run() error
	RunAndReturnExitCode() (int, error)
	RunAndReturnTrimmedOutput() (string, error)
	RunAndReturnTrimmedCombinedOutput() (string, error)
	Start() error
	Wait() error
}

type Factory interface {
	Create(name string, args []string, opts *Opts) Command
}

type Opts struct {
	Stdout io.Writer
	Stderr io.Writer
	Stdin  io.Reader
	Env    []string
	Dir    string
}