https://blog.wongcw.com/2022/07/25/shell%e9%a0%90%e5%91%8a%e5%b0%87%e6%8e%a8%e5%85%a9%e6%ac%be%e6%96%b0%e9%9b%bb%e5%8b%95%e6%bb%91%e6%9d%bf%e8%bb%8a%e5%92%8c%e4%b8%80%e7%b3%bb%e5%88%97%e9%9b%bb%e5%8b%95%e8%87%aa%e8%a1%8c%e8%bb%8a/