open url golang

openurl.go

func openURL(url string) error {
        var err error
        switch runtime.GOOS {
        case "linux":
                err = exec.Command("xdg-open", url).Start()
        case "windows":
                err = exec.Command("rundll32", "url.dll,FileProtocolHandler", "http://localhost:4001/").Start()
        case "darwin":
                err = exec.Command("open", url).Start()
        default:
                err = fmt.Errorf("Cannot open URL %s on this platform", url)
        }
        return err
}