protected function getBrowserCommand($url)
    {
        // Mac
        if (\Tivie\OS\MACOSX == $this->os->getType()) {
            return "open $url";
        }

        // Windows
        if ($this->os->isWindowsLike()) {
            return "start $url";
        }

        // everything else (most likely unix)
        return "xdg-open $url";
    }