From: Axel Etzold <AEtzold@...>
Date: 2008-10-29T05:40:31+09:00
Subject: Re: createing directories and moving files into it


-------- Original-Nachricht --------
> Datum: Wed, 29 Oct 2008 02:53:09 +0900
> Von: Bee Tard <scappa@gmail.com>
> An: ruby-talk@ruby-lang.org
> Betreff: createing directories and moving files into it

> I have an undetermined list of directories.
> 
> I am trying to loop through them all and in each one I want to make a
> directory called 'images'. when i do this, I want o move all the imagges
> in that folder into it.
> 
> so i have a tree like this:
> 
> some-dir
> \_abc
>  - img00971273.jpg
>  - img21234235.jpg
>  - img12345623.jpg
> \_123
>  - img99554361.jpg
>  - img21234235.jpg
>  - img53840534.jpg
> \_xyz
>  - img00930443.jpg
>  - img12364235.jpg
>  - img09982623.jpg
> \_890
>  - img00923871.jpg
>  - img21292835.jpg
>  - img08836823.jpg
> 
> I would like to create
> 
> 
> some-dir
> \_abc
>  \__images
>    - img00971273.jpg
>    - img21234235.jpg
>    - img12345623.jpg
> 
> And so on and so forth.
> 
> Hope this illustration makes sense. I have tried to create a loop and go
> through each directory and use system() to 'mkdir images' and mv *.jpg
> /images
> 
> no luck as yet. really starting to like some of Ruby's fileutils. just
> wish i could get moving with some of these tasks :)
> 
> All help greatly appreciated. I'll buy you a beer at lunch.
> -- 
> Posted via http://www.ruby-forum.com/.


Hi ---

you can create a directory, if it doesn't yet exist, using fileutils:

irb(main):001:0> require "fileutils"
=> true
irb(main):002:0> FileUtils.mkdir_p "temp5"
=> "temp5"

If you do it again, that doesn't matter.
For moving files, I like the rio gem:

http://rio.rubyforge.org/


require "rubygems"
require "rio"

Iterate over the .rb files in a directory and its subdirectories.

 rio('adir').all.files('*.rb') { |entrio| 

   # do some checks on entrio.to_s to classify things

  if /\.jpg$/.match(entrio.to_s)
    p "it's an image
  end

 }

Do  also check that you have writing permissions on the directory you want to write to.

Best regards,

Axel 
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