//sys/class/tty/tty21/subsystem/tty7/subsystem/tty42/subsystem/tty18/subsystem/tty11/subsystem/tty16/subsystem/tty40/subsystem/tty54/subsystem/tty59/subsystem/ttyS1/subsystem/tty12/subsystem/tty61/subsystem/tty48/subsystem/tty24/subsystem/tty1/subsystem/tty63/subsystem/tty13/dev