linux命令是对Linux系统进行管理的命令。对于Linux系统来说，无论是中央处理器、内存、磁盘驱动器、键盘、鼠标，还是用户等都是文件，Linux系统管理的命令是它正常运行的核心，与之前的DOS命令类似。linux命令在系统中有两种类型：内置Shell命令和Linux命令。(Linux commands are commands for managing Linux systems. For the Linux system, whether it is the central processor, memory, disk drives, keyboards, mice, or users are files, Linux system management commands is the core of its normal operation, similar to the previous DOS commands. There are two types of linux commands in the system: built-in shell commands and Linux commands.)