From: matz@... (Yukihiro Matsumoto)
Date: 2002-12-22T18:56:22+09:00
Subject: Re: Quickest way to get md5 of a file?

Hik

In message "Quickest way to get md5 of a file?"
    on 02/12/22, coma_killen@fastmail.fm <coma_killen@fastmail.fm> writes:

|I wanna get the md5 checksums of files from within Ruby code.
|I realize I can simply loop, read chunks of the file and
|update an MD5 object but that would be very much slower than
|using an external MD5 checksum program and I have very many
|files to check.
|
|Is there some trick to speed this up or should we consider adding
|a checksum_of_file method to Digest?

ruby -r digest/md5 -e 'ARGV.each{|f|print f, " "; puts Digest::MD5.hexdigest(File.read(f))}' *

							matz.