brightness_get_sysfs 234 B

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  1. #!/bin/sh
  2. SYSTEM_BRIGHTNESS=/sys/class/backlight/backlight/brightness
  3. # Check args
  4. if [ ${#} -ne 0 ]; then
  5. echo "Usage: $(basename ${0})"
  6. exit 1
  7. fi
  8. let brightness=$(cat ${SYSTEM_BRIGHTNESS})*10-10
  9. echo ${brightness}
  10. exit 0