需要遍历目录，重命名文件，特别的改变特定类型文件的名称后缀为其他后缀。

You need to rename files throughout a subtree of directories, specifically changing the names of all files with a given extension so that they end in another extension.

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更名像其他许多文件重命名实用工具提供它的用户提供重命名前缀，后缀改变的情况下，字符串替换，改变文件扩展名和更多的功能。

ReNamer like many other file renaming utilities provides it's user with the ability to rename prefixes, suffixes, change case, string replacements, change file extensions and much more.

youdao