如何使用 Ruby-Rails 删除文件夹的所有内容? [英] How to delete all contents of a folder with Ruby-Rails?

问题描述

我有一个 public/cache 文件夹，里面有文件和文件夹.如何使用 rake 任务完全清空该文件夹?

I have a public/cache folder which has files and folders. How can I completely empty that folder using a rake task?

推荐答案

Ruby 在 FileUtils 模块，可用于删除文件和非空文件夹/目录:

Ruby has the *nix rm -rf equivalent in the FileUtils module that you can use to delete both files and non-empty folders/directories:

FileUtils.rm_rf('dir/to/remove')

要保留目录本身并仅删除其内容:

To keep the directory itself and only remove its contents:

FileUtils.rm_rf(Dir.glob('dir/to/remove/*'))

FileUtils.rm_rf(Dir['dir/to/remove/*'])      # shorter version of above

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