//sys/class/tty/tty21/subsystem/console/subsystem/tty20/subsystem/tty5/subsystem/tty18/subsystem/tty21/subsystem/tty12/subsystem/ttyS3/subsystem/tty30/subsystem/tty26/subsystem/tty47/subsystem/ttyS1/subsystem/ttyS2/uevent