Novell LINUX ENTERPRISE SERVER 11 - ADMINISTRATION Administration Manual page 152

%p, $devpath
The value of DEVPATH.
%k, $kernel
The value of KERNEL or the internal device name.
%n, $number
The device number.
%N, $tempnode
The temporary name of the device file.
%M, $major
The major number of the device.
%m, $minor
The minor number of the device.
%s{attribute}, $attr{attribute}
The value of a sysfs attribute (specified by attribute).
%E{variable}, $attr{variable}
The value of an environment variable (specified by variable).
%c, $result
The output of PROGRAM.
%%
The % character.
$$
The $ character.
11.6.3 Using udev Match Keys
Match keys describe conditions that must be met before a udev rule can be applied.
The following match keys are available:
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