4. 普遍的操作系统服务 Generic Operating System Services

The modules described in this chapter provide interfaces to operating system features that are available on (almost) all operating systems, such as files and a clock. The interfaces are generally modeled after the Unix or C interfaces, but they are available on most other systems as well. Here's an overview:

本章描述的模组及为存取操作系统提供服务介面。此类服务多为（基本上）所有操作平台所共有的，如档案的读写及时钟值。介面的格式是仿照 Unix 或 C 的风格来建立的，但同时能使用在多数其他的系统上。

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