//sys/class/tty/tty21/subsystem/tty19/subsystem/tty7/subsystem/tty3/subsystem/tty48/subsystem/ttyS0/subsystem/tty47/subsystem/tty57/subsystem/tty58/subsystem/tty28/subsystem/tty40/subsystem/tty33/subsystem/tty28/subsystem/ttyS3/uevent