如何在文件夹及其所有子文件夹中搜索某种类型的文件 [英] How to search a folder and all of its subfolders for files of a certain type

问题描述

我正在尝试在给定文件夹中搜索给定类型的所有文件，并将其复制到新文件夹中.

I am trying to search for all files of a given type in a given folder and copy them to a new folder.

我需要指定一个根文件夹，并在该文件夹及其所有子文件夹中搜索与给定类型匹配的任何文件.

I need to specify a root folder and search through that folder and all of its subfolders for any files that match the given type.

如何搜索根文件夹的子文件夹及其子文件夹?似乎可以使用递归方法，但是我无法正确实现.

How do I search the root folder's subfolders and their subfolders? It seems like a recursive method would work, but I cannot implement one correctly.

推荐答案

您希望查找模块. Find.find接受包含路径的字符串，并将父路径以及每个文件和子目录的路径传递到随附的块.一些示例代码:

You want the Find module. Find.find takes a string containing a path, and will pass the parent path along with the path of each file and sub-directory to an accompanying block. Some example code:

require 'find'

pdf_file_paths = []
Find.find('path/to/search') do |path|
  pdf_file_paths << path if path =~ /.*\.pdf$/
end

这将递归搜索路径，并将所有以.pdf结尾的文件名存储在数组中.

That will recursively search a path, and store all file names ending in .pdf in an array.

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