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+What: /sys/class/
+Date: Febuary 2006
+Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+ The /sys/class directory will consist of a group of
+ subdirectories describing individual classes of devices
+ in the kernel. The individual directories will consist
+ of either subdirectories, or symlinks to other
+ directories.
+ All programs that use this directory tree must be able
+ to handle both subdirectories or symlinks in order to
+ work properly.
+ udev <linux-hotplug-devel@lists.sourceforge.net>