md5 for large files
andymac at bullseye.apana.org.au
Wed Mar 5 11:00:45 CET 2003
On Tue, 4 Mar 2003, Bob Ballard wrote:
> Large is any file that I want to transfer around. For example the gpg
> library for windows that I just downloaded is a little over 1 mb and has a
> defined md5 value that I'd like to compare. This for a starter but for a
> specific purpose, i'd like to include the hash val in a separate file and
> upload or download with the target file, no matter the size. Any clues?
So how much memory does your machine have? I routinely start the
interpreter and do:
>>> import md5
on files of megabytes. On an 83MB ZIP file I just tried, this completed
in less than 10 seconds (Athlon 1.4, 512MB RAM, OS/2).
This approach won't work where the file is larger than available VM, but
others have given you recipes to deal with that.
Andrew I MacIntyre "These thoughts are mine alone..."
E-mail: andymac at bullseye.apana.org.au | Snail: PO Box 370
andymac at pcug.org.au | Belconnen ACT 2616
Web: http://www.andymac.org/ | Australia
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