原文地址： https://blog.csdn.net/u014717036/article/details/71036736
调整屏幕亮度命令
echo 1000 > /sys/class/backlight/intel_backlight/brightness # 屏幕亮度调到1000 cat /sys/class/backlight/intel_backlight/max_brightness # 查看屏幕亮度最大值
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设置默认屏幕亮度
编写一个调整屏幕亮度的脚本，比如：screen-light.sh
echo 800 > /sys/class/backlight/intel_backlight/brightness
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添加到开机自启
编辑~/.xinitrc文件
调节屏幕亮度
~/screen-light.sh
