//sys/class/tty/tty21/subsystem/tty36/subsystem/tty3/subsystem/ttyS2/subsystem/tty17/subsystem/tty7/subsystem/tty42/subsystem/tty6/subsystem/tty45/subsystem/tty49/subsystem/tty36/subsystem/tty56/subsystem/tty44/subsystem/tty53/dev