The way to run the command varies with operating system.

运行该命令的方式因操作系统而异。

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Exec -this handy PHP function sends a string for the operating system's command line to process.

exec—这个方便的php函数发送一个字符串供操作系统的命令行处理。

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The execution time of the operations is measured using the operating system command time or db2's db2batch tool.

这些操作的执行时间通过操作系统命令time或db2的db 2 batch工具来测量。

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It's a little more involved on a PC but it's all free, the software you can download, and Linux in similar operating systems generally come with a compiler or you run a simple command to get it.

在PC机上有点复杂，但是它是免费的，你一般下载的软件，类似Linux的操作系统等等通常都需要,一个编译器，或者你可以运行一些简单的指令来获取。

哈佛公开课 - 计算机科学课程节选

They used a command line, and Apple DOS operating system.

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Also, each company has a business segment that could be spun off because it has an operating margin superior to its parent and would also command an above-market enterprise multiple as a stand-alone business.

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MacDill is the home of the U.S. Central Command, which directs the U.S. forces operating in Afghanistan.

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