shell维护许多常用命令和选项的索引，您很可能能够得到所需的帮助。

The shell maintains a large index of common commands and options, and chances are, you can get the help you need.

youdao

shell维护许多常用命令和选项的索引，您很可能能够得到所需的帮助。

The shell maintains a large index of common commands and options, and chances are, you can get the help you need.

youdao