了解不同的系统正在使用的程序库版本很重要。

It's important to know what library version the different systems are using.

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为了让用户(和程序员)不必追踪程序库版本号和更新，系统提供了大量的符号链接。

To prevent users (and programmers) from needing to track library Numbers and updates, the system comes with a large number of symbolic links. In general, the pattern is that.

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找到程序库(它可能在系统中若干个目录中的任意一个目录中)。

Finding it (and it may be in any of several directories on a system).

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