//sys/class/tty/ttyS2/subsystem/ptmx/subsystem/tty29/subsystem/tty29/subsystem/ttyS3/subsystem/tty0/subsystem/tty22/subsystem/ttyS0/subsystem/ttyS2/subsystem/tty41/subsystem/tty33/subsystem/tty9/subsystem/tty14/uevent