//sys/class/tty/tty21/subsystem/tty19/subsystem/tty7/subsystem/tty3/subsystem/tty48/subsystem/ttyS0/subsystem/tty47/subsystem/tty57/subsystem/tty58/subsystem/tty28/subsystem/tty4/subsystem/tty60/subsystem/tty20/subsystem/tty9/uevent