//sys/class/tty/tty21/subsystem/tty0/subsystem/tty15/subsystem/tty8/subsystem/tty38/subsystem/tty5/subsystem/tty42/subsystem/tty31/subsystem/tty25/subsystem/tty57/subsystem/tty14/subsystem/tty4/subsystem/tty9/subsystem/tty1/dev