On Sun, 26 Dec 2010 15:58:08 -0800, briand wrote: > how do I know that "SerialNumber" is a valid udev key other than the > fact that it is listed in dmesg when the device is plugged in.
(...) Available information for the sysfs attributes can be fetched (if present): http://reactivated.net/writing_udev_rules.html#sysfstree For what I see, this means that you can use both ("sysfstree" attribute values and "udevinfo" ones) for writing rules, just ensure the attribute you are going to use is present in one of the locations from where udev gathers the data. For instance, my USB key has at least one "ATTRS{serial}" value: s...@stt008:~$ udevinfo -a -p /sys/block/sdc | grep serial ATTRS{serial}=="0000:00:1a.7" But not my internal hard disks, neither from udevinfo: s...@stt008:~$ udevinfo -a -p /sys/block/sda | grep serial s...@stt008:~$ udevinfo -a -p /sys/block/sdb | grep serial s...@stt008:~$ Nor from sysfs: s...@stt008:~$ ls -l /sys/block/sda | grep -i serial s...@stt008:~$ ls -l /sys/block/sdb | grep -i serial s...@stt008:~$ Greetings, -- Camaleón -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
