termnux安装方法
https://blog.csdn.net/u010475354/article/details/79675893
使用Termux把Android手机变成SSH服务器
https://lujun9972.github.io/blog/2018/01/24/%E4%BD%BF%E7%94%A8termux%E6%8A%8Aandroid%E6%89%8B%E6%9C%BA%E5%8F%98%E6%88%90ssh%E6%9C%8D%E5%8A%A1%E5%99%A8/