On Tuesday 18 January 2005 12:39, Mark Polhamus wrote:
> Richard Smoot wrote:
> > How do I use md5sum to check a download?
> > I just dl'd the ISO image of the ftp install of SUSE 9.2 Pro.
> > I also got the md5sum for it.
>
> Here's what I do on the command line (I'm certain there may be better
> methods which may make more sense if you verifying many files):
>
> echo <known good checksum cut/pasted from website/whatever>
> md5sum <downloaded file>
>
> then do a visual comparison of the two strings. For example, if I know the
>
> checksum for foo.iso should be "d41d8cd98f00b204e9800998ecf8427e":
> > [mark@granite ~ 3]$ echo d41d8cd98f00b204e9800998ecf8427e; md5sum
> > /tmp/foo.iso d41d8cd98f00b204e9800998ecf8427e
> > d41d8cd98f00b204e9800998ecf8427e /tmp/foo.iso
> > [mark@granite ~ 4]$
>
> Having the known good and the calculated checksum on top of each other
> makes comparison easier.
>
>
> -- Mark
Or if you don't want to trust your eyes (or someone else's eyes)with a visual
comparison, try this:
1) Download foo.iso
2) Download foo.md5sum
3) Md5sum foo.iso>my-foo.md5
4) Diff foo.md5sum my-foo.md5
Diff will only show a response if the two md5 files differ.
Jeff
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