你将需要复制你工作区中的文件，最好是你为这个例子创建的项目。

You will need to copy the file in your workspace, ideally in the project you have created for this example.

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或者，只创建一个简单的文件，如第一个例子所示。

Or just create a simple file, as the first example demonstrates.

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第二个例子是，创建文件cleanup工具，来查找任何可能由Vim或者EMACS之类的编辑器临时生成的文件。

As a second example, create a file cleanup utility to look for any files that might be considered temporary generated by editors such as Vim or EMACS.

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