关于"more/var/log/maillog|grepaaa"命令，说法正确的是（）。A、通过管道，将显示mailllog的文件到aaa文件中B、通过管道，将maillog文件中含aaa的内容显示到标准输出中C、显示所有包含"aaa"字符的行D、显示所有maillog的内容给aaa的输出设备
关于"more/var/log/maillog|grepaaa"命令，说法正确的是（）。
- A、通过管道，将显示mailllog的文件到aaa文件中
- B、通过管道，将maillog文件中含aaa的内容显示到标准输出中
- C、显示所有包含"aaa"字符的行
- D、显示所有maillog的内容给aaa的输出设备
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