The paper, according to the mechanism of operating system file system and a case of design and implementation. A programming practice project is designed and implemented.

本文根据操作系统文件系统工作原理，设计用于程序设计实践类课程的教学方案。

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Therefore, the security mechanism to run these commands is based on the operating system permissions of the files.

因此，运行这些命令的安全机制以文件的操作系统权限为基础。

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Spawning thousands or millions of processes is quite normal, because the languages controls the concurrency mechanism not the operating system.

因为由语言(而不是操作系统)控制并发机制，所以生成数千甚至数百万个进程是很普通的。

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The group of 8, 000 Linux developers has filed a complaint to the European Commission about a mechanism that locks out other operating systems.

BBC: Microsoft faces European open software probe

Rather than the tumbling yen being more evidence of economic incompetence, the exchange rate is the mechanism that redistributes demand away from economies that are operating at full capacity towards those in recession.

ECONOMIST: A weaker yen is good news, not bad, for Japan��s economy