如何获得UNIX命令的帮助手册信息？（）A、man commandB、help commandC、command /？
如何获得UNIX命令的帮助手册信息？（）
- A、man command
- B、help command
- C、command /？
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单选题如何获得UNIX命令的帮助手册信息？（）Aman commandBhelp commandCcommand /？