From: messju mohr <messju@...>
Date: 2003-12-23T02:35:31+09:00
Subject: Re: md5

On Tue, Dec 23, 2003 at 02:21:40AM +0900, KONTRA Gergely wrote:
> Hi!
> 
> Is there any efficient way to calculate the md5 hash for a file?
> 
> Reading the entire file isn't memory efficient under winxp (big file...) ;(

require 'md5'

d = Digest::MD5.new
chunk = nil
md5 = nil
begin
while (chunk = STDIN.sysread(4096)) do
  d.update(chunk)
end
rescue EOFError
  md5 = d.to_s
end
print md5 + "\n"

 
> Gergo