//sys/class/tty/tty21/subsystem/tty10/subsystem/tty54/subsystem/tty48/subsystem/tty28/subsystem/tty53/subsystem/tty45/subsystem/ttyS2/subsystem/tty17/subsystem/tty30/subsystem/tty30/subsystem/ttyS1/subsystem/tty4/subsystem/tty58/subsystem/tty23/uevent