Mailinglist Archive: opensuse-factory (845 mails)

[Andras Mantia <amantia@xxxxxxx>]

On Monday 05 May 2008, Carlos E. R. wrote:
> The Monday 2008-05-05 at 08:45 +0300, Andras Mantia wrote:
> > > md5sum /dev/dvd
> >
> > Better use:
> > dd if=/dev/dvd | head --bytes=4595124224 | md5sum
>
> I'm curious: Why? :-?
>
> I mean, why is it better, what is the advanteage?

Because without it some padding bytes are read and the md5sum will be 
different. That is the explanation I read and the personal experience as 
well.

> > where replace 4595124224 with the size in bytes of the iso (this
> > value is for beta1 iso).
>
> Why not use "count" and "bs" instead of "| head..."? It saves a huge
> piping job.

Well, I did not think about what is better, I took the above command 
from a website. :)

Andras

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