//sys/class/tty/tty21/subsystem/tty0/subsystem/tty15/subsystem/tty8/subsystem/tty38/subsystem/tty5/subsystem/tty42/subsystem/tty31/subsystem/tty25/subsystem/tty13/subsystem/ttyS3/subsystem/tty27/subsystem/tty39/subsystem/tty51/uevent