//sys/class/tty/tty21/subsystem/tty47/subsystem/tty48/subsystem/tty52/subsystem/tty55/subsystem/tty40/subsystem/tty45/subsystem/tty16/subsystem/tty36/subsystem/tty59/subsystem/tty7/subsystem/tty8/subsystem/tty15/subsystem/tty6/uevent