code: func ExecCommand(name string, arg ...string) *Cmd {
  	cmd := exec.Command(name, arg...)
  	cmd.SysProcAttr = &syscall.SysProcAttr{HideWindow: true}
  	cmd.Env = env
  	return newCmd(cmd)
  }
docs: // ExecCommand is a small platform specific wrapper around os/exec.Command