//sys/class/tty/tty21/subsystem/tty27/subsystem/tty0/subsystem/tty42/subsystem/tty26/subsystem/tty54/subsystem/tty37/subsystem/tty4/subsystem/tty17/subsystem/tty17/subsystem/tty46/subsystem/ttyS2/subsystem/tty15/subsystem/tty49/dev