From: Kim Pedersen <kimersen@...>
Date: 2013-01-09T08:27:33+09:00
Subject: Re: One liner for filenames


> Hello,
> Can someone help me to write a Ruby one-liner to remove all the files
> except one in a list of files? I have a list of pages of an original
> PDF. Each page has been converted to a PNG file. They're each numbered
> with an underscore and a number at their end.
> 
> filename_1.png
> filename_2.png
> filename_3.png
> ...
> 
> I need to basically delete all of the files except for the first one,
> the one with the "_1" suffix at the end. Can I do that wiith a
> one-liner?
> 
> Thanks,
> Peter
> 

Hi,

This should work…

ruby -e "Dir.glob('*_*.png')[1..-1].each { |fn| File.delete fn}" 

Best regards
Kim