This article illustrates how to write a Linux command-line utility, similar to standard commands such as cat, ls, pr, mv, and so on.

本文演示如何编写与 cat、ls、pr 和 mv 等标准命令类似的 Linux 命令行实用程序。

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FMT formats the text into neat paragraphs and outputs it to standard output, which is piped into the standard input of pr.

fmt命令将文本内容格式化之后，将结果输送到标准输出，通过管道机制，作为pr命令的标准输入，pr命令将接收到的标准输入进行处理——内容分页。

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Therefore, while most enterprises have an immature understanding of pr, they tend to take price as the standard to select pr firms or regard pr as a tool of increasing their exposure rate.

在企业对于公关认知尚未成熟的情况之下，往往以价格作为选择公关公司的标准，或仅将公关视为增加企业曝光率的工具。

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Standard PR theory would suggest the company apologize, and step up its good-works marketing, whether giving away money or running more ads touting its commitment to alternate energy research, in order to combat the bad press.

FORBES: Why the Arkansas Pipeline Spill Won't Hurt Exxon Mobil's Reputation

Downplaying the events might be standard PR practice and they may well be minor bumps in the ongoing shakedown of the new plane but I think Boeing needs to reevaluate its strategy in light of the fact that it has an airplane problem .

FORBES: Boeing Has An Airplane Problem, Not a PR Problem