记录日志2

https://www.cnblogs.com/z-x-y/p/9235358.html

permission denied

https://jingyan.baidu.com/article/90808022fa50dbfd90c80f52.html

linux所有命令不能用显示-bash: ls: command not found

https://www.cnblogs.com/cnsdhzzl/p/9625736.html

https://blog.csdn.net/sun_81/article/details/86714128

https://blog.csdn.net/qq_19734597/article/details/94971925

如何科学使用stackoverflow

https://blog.csdn.net/weixin_38233274/article/details/80349534

记录日志2

原文：https://www.cnblogs.com/denniscao/p/12072466.html