https://blog.wongcw.com/2021/05/28/vmshell%e4%ba%8c%e6%9c%9fcmi%e7%b7%9a%e8%b7%af%e5%8e%bb%e5%9b%9e%e7%a8%8b%e5%85%a8%e9%83%a8%e7%9b%b4%e9%80%a3%ef%bc%8c%e5%b9%b4%e4%bb%9845%e5%88%80%e4%b8%80t%e6%9c%88%e4%bb%983%e5%88%80%ef%bc%88/