//sys/class/tty/tty42/subsystem/tty27/subsystem/tty34/subsystem/tty16/subsystem/tty35/subsystem/tty47/subsystem/tty62/subsystem/tty8/subsystem/tty59/subsystem/tty22/subsystem/tty4/subsystem/tty37/subsystem/ttyS3/device/power/state