查找并删除重复的文件 Finding and removing duplicate files
重复的文件橡皮擦是一个很小的实用工具来搜索并删除重复的文件。
Duplicate file Eraser is a small utility to search for and delete duplicate files.
如果两个文件是相同的，仅仅是名称不同，rename - f会删除重复的文件。
If two files are identical other than name, rename -f would remove duplicates.
字典的键天生是唯一的，所以可以用字典来删除文件的重复行，为了完成这项工作可以采用保存这些行的原始排序的方法。
The keys of a dictionary are inherently unique, so it's possible to use a dictionary to remove duplicate lines from a file, and to do so in a way that preserves the original ordering of those lines.
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