# 查看最大亮度的數(shù)值是多少,顯卡不同,/sys/class/backlight文件夾下的布局也不同,需要根據(jù)自己的情況進(jìn)入不同的目錄
$ cat /sys/class/backlight/intel_backlight/max_brightness
# 修改文件權(quán)限
$ sudo chmod 766 /sys/class/backlight/intel_backlight/brightness
# 修改亮度值
$ sudo echo 300 > /sys/class/backlight/intel_backlight/brightness
可以創(chuàng)建light.sh腳本至桌面上雙擊改變亮度
#!/bin/bash
sudo chmod 766 /sys/class/backlight/intel_backlight/brightness
echo 700 > /sys/class/backlight/intel_backlight/brightness