https://iphone-k.com/%d8%a7%d8%a8%d9%84-%d8%aa%d8%b9%d9%84%d9%86-%d8%b1%d8%b3%d9%85%d9%8a%d8%a7%d9%8b-%d8%b9%d9%86-%d9%86%d8%b8%d8%a7%d9%85-os-x-mavericks/