Ruby:如何递归查找和删除空目录? [英] Ruby: how do I recursively find and remove empty directories?

问题描述

我正在尝试编写一些ruby，它将以递归方式在给定目录中搜​​索所有空子目录并将其删除.

I'm trying to write some ruby that would recursively search a given directory for all empty child directories and remove them.

有想法吗?

注意:如果可能，我想要一个脚本版本.这既是实际需求，又是可以帮助我学习的东西.

Note: I'd like a script version if possible. This is both a practical need and a something to help me learn.

推荐答案

在红宝石中:

Dir['**/*']                                            \
  .select { |d| File.directory? d }                    \
  .select { |d| (Dir.entries(d) - %w[ . .. ]).empty? } \
  .each   { |d| Dir.rmdir d }

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