https://knightzone.studio/2013/11/29/201/linux%ef%bc%9a%e5%8f%b0%e5%b8%ab%e5%a4%a7%e8%b3%87%e8%a8%8a%e5%af%a6%e5%8b%99%e6%87%89%e7%94%a8%e8%ae%80%e6%9b%b8%e6%9c%83-%e7%ac%ac%e5%9b%9b%e5%a0%82%e8%aa%b2%e6%94%af%e7%b7%9a%ef%bc%9alinux/