LINUX.ORG.RU

История изменений

Исправление merhalak, (текущая версия) :

Так даже чутка попроще будет. 

#!/usr/bin/env bash

sensor_file="/sys/bus/acpi/devices/ACPI0008:00/iio\:device0/in_illuminance_raw"
max_brightness_file="/sys/class/backlight/acpi_video0/max_brightness"
brightness_file="/sys/class/backlight/acpi_video0/brightness"

while :; do
	read sensor < $sensor_file
	read max_brightness < $max_brightness_file

	result=$sensor
	if (( $sensor <= 5 )); then
		result=5
	else
		((result = result * 11 / 10))

		if (( $result > $max_brightness )); then
			result=$max_brightness
		fi
	fi

	echo $result > $brightness_file
	sleep 5
done

sleep поправь на нужное количество секунд, которое тебе комфортно для авторегулировки. Можно даже десятые доли брать, типа sleep 0.5.

Исходная версия Deleted, :

Так даже чутка попроще будет. 

#!/usr/bin/env bash

sensor_file="/sys/bus/acpi/devices/ACPI0008:00/iio\:device0/in_illuminance_raw"
max_brightness_file="/sys/class/backlight/acpi_video0/max_brightness"
brightness_file="/sys/class/backlight/acpi_video0/brightness"

while :; do
	read sensor < $sensor_file
	read max_brightness < $max_brightness_file

	result=$sensor
	if (( $sensor <= 5 )); then
		result=5
	else
		((result = result * 11 / 10))

		if (( $result > $max_brightness )); then
			result=$max_brightness
		fi
	fi

	echo $result > $brightness_file
	sleep 5
done