Awk can act as a filter in a pipeline or take input from the keyboard (standard input) if no file or files are specified.

awk可以在管道中作为过滤器，如果没有指定文件，它也可以从键盘(标准输入)中接收输入。

youdao

Groeb says he has urged FDA to take action as he also "totally supports a standard of Identity for honey."

Groeb说他已经督促FDA采取措施，因为他也“绝对支持鉴定蜂蜜的标准。”

youdao

Because most tools take standard input as an argument using a hyphen (-), even the argument for using cat to intersperse multiple files with stdin is often not valid.

由于大多数工具都接受使用连字符(-)的标准输入作为一个参数，因此即使使用cat来分散stdin中的多个文件，参数也通常是无效的。

youdao

We're not saying the iPod is innocent here or anything, but we'll take H.264 as a standard over WMV any day.

ENGADGET: Zune review

Datacenters can put up to 1800 servers in a single, 47U rack, which could take 10X as many racks using a standard architecture.

FORBES: HP Moonshot: Say Goodbye to the Vanilla Server