From: Daniel Berger <djberg96@...>
Date: 2011-01-06T03:34:36+09:00
Subject: Re: Getting the actual size of a sparse file



On Jan 5, 9:58 am, Perry Smith <pedz...@gmail.com> wrote:
> I would go find the source for Ubuntu's ls and see what does it do for
> the -s option.
>
> Note that -s is output in blocks.

Yeah, looks like ls -s defaults to a block size of 1.

Hm, how does this look?

class File
  def self.sparse?(file)
    stats = File.stat(file)
    stats.size > stats.blocks * stats.blksize
  end
end