linux必学命令 Linux提供了大量的命令，利用它可以有效地完成大量的工作，如磁盘操作、文件存取、目录操作、进程管理、文件权限设定等。-Linux will learn Linux command provides a large number of orders, it can be effectively completed a lot of work, such as a disk operation, file access, directory operations, proces