//sys/class/tty/tty21/subsystem/tty52/subsystem/tty1/subsystem/tty42/subsystem/tty44/subsystem/tty63/subsystem/tty57/subsystem/tty30/subsystem/tty33/subsystem/tty36/subsystem/tty0/subsystem/ptmx/subsystem/tty58/subsystem/tty28/dev