linux系统下,ll,ls等命令失效

https://blog.csdn.net/qq_36168749/article/details/96305510?spm=1001.2101.3001.6650.3&utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7Edefault-3.nonecase&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7Edefault-3.nonecase

原文地址:https://www.cnblogs.com/zmwy/p/15601907.html