From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bryan Kadzban <bryan@kadzban.is-a-geek.net>
Date: Wed, 02 May 2007 11:08:15 +0000
Subject: Re: udev problem DVB-S/T Cards
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Razza wrote:
> I am specifically interested in what 'K' is at various points in this
> rule -
>=20
>=20
> BUS=3D=3D"pci", ID=3D=3D"0000:01:06.0", SYSFS{device}=3D=3D"0x7146",=20
> SYSFS{vendor}=3D=3D"0x1131", PROGRAM=3D"/bin/sh -c 'K=3D%k; K=3D$${K#dv=
b};
> printf dvb/adapter5/%%s $${K%%%%.*} $${K#*.}'", NAME=3D"%c",
> MODE=3D"0660"

Well, it starts out at %k (the kernel NAME, which should be available
via udevinfo).  After that, you should be able to set K=3D<that name> in =
a
normal shell, and then start running subsequent commands from the shell,
while echoing $K from time to time.

(However, note that udev requires double dollar signs and double percent
signs, so if you paste the various echos and printfs into a shell,
you'll have to un-escape those characters.  I.e., %%s should be run
through the shell as %s, and %%%% should be turned into %%.)

And actually, K only changes once (when it's set to ${K#dvb} just before
the printf.  The rest of that rule is just formatting the output.

(Oh, and you hopefully already know this from the documentation, but
NAME=3D"%c" sets NAME to the output of the PROGRAM.)


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