通常，CVS的主要功能是记录源文件的历史。

In general, the primary function of CVS is to record the history of source files.

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如果历史记录文件比较大，您可以首先通过管道传输到tail来运行周期性的检查，例如，要检查最后的1,000条命令，可以尝试使用。

If your history file is large, you can run periodic checks by piping to tail first — for example, to check the last 1,000 commands, try.

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显示某些执行历史记录的跟踪文件。

A trace file showing some of the execution history.

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