md5sum and xauth

Alexander Gottwald
Wed Dec 12 09:33:00 GMT 2001

On Wed, 12 Dec 2001, Rüdiger Bodack wrote:

> Hi all, 
> I am trying to create a magic cookie for .Xauthority, using this nice
> command line I found somewhere:
> dd if=/dev/urandom count=1|md5sum|sed -e 's/^/add :0 . /'|xauth -q
> It seems that the md5sum shows unexpected behavior on my W2K. md5sum always
> gives something like this:
> f3f7d6844351a99aaeb44751037112ad *-
> The *- seems to be strange. Am I am doing a stupid mistake?

md5sum --help:
The sums are computed as described in RFC 1321.  When checking, the input
should be a former output of this program.  The default mode is to print
a line with checksum, a character indicating type (`*' for binary, ` ' for
Text), and name for each FILE.

This means md5sum  read the file - (stdin) in binary mode.

Try  dd if=/dev/urandom count=1|md5sum|cut -f1 -d\ |sed [...skipped]

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