From: "Brian D. Burns" <burns@...>
Date: 2013-01-11T19:09:21+09:00
Subject: Re: One liner for filenames

On 01/10/2013 06:58 AM, Peter Bailey wrote:
> Brian D. B. wrote in post #1091712:
>> On 01/08/2013 05:04 PM, Dami叩n M. Gonz叩lez wrote:
>>>> ...
>>> ruby -e "Dir.foreach('C:/Directory_with_png/') {|file| File.delete(file)
>>> unless (file.==('.')) || (file.==('..') || (file.==('filename_1.png'))"
>>>
>>>  Kind regards.
>>>
>>
>> There's certainly many ways to do this, but globing will ignore the dot
>> dirs, and is a bit shorter.
>> File.delete *Dir['*.png'].reject {|f| f =~ /_1\.png$/ }
> 
> Thanks, Brian. But, even preceding this with "ruby -e" gives me nothing. 
> Should I make this part of a script instead of it being a one-liner?
> 

That's odd... Works for me under 1.8.7, 1.9.2 and 1.9.3.
ruby -e "File.delete *Dir['*.png'].reject {|f| f=~ /_1\.png$/ }"
There will be no output. It will just delete the files.