//sys/class/tty/tty21/subsystem/tty50/subsystem/tty53/subsystem/tty55/subsystem/tty54/subsystem/tty36/subsystem/tty29/subsystem/tty39/subsystem/tty25/subsystem/tty4/subsystem/tty20/subsystem/tty54/subsystem/tty40/subsystem/ttyS1/dev