//sys/class/tty/ttyS2/subsystem/ptmx/subsystem/tty29/subsystem/tty12/subsystem/tty63/subsystem/tty6/subsystem/tty28/subsystem/tty19/subsystem/tty47/subsystem/tty30/subsystem/tty19/subsystem/tty30/subsystem/tty49/subsystem/tty10/subsystem/ttyS3/subsystem/tty15/subsystem/tty5/subsystem/tty7/subsystem/tty29/dev