How to adjust the screen brightness in Mint linux

/*************************************** ******************************
* Author: Samson
* Date: 04/19/2014
* Test platform:
* 3.11.0-12-generic # 19-Ubuntu
* GNU bash, version 4.2.45
**************************************** ****************************/

I used Mint Linux to adjust the brightness of the interface program settings after the brightness does not change, it is only a play, there is a "depth", directly modify the configuration file value is OK, directly modify the value in the/sys/class/backlight/intel_backlight/brightness file for brightness management,

Directly run the command echo 100>/sys/class/backlight/intel_backlight/brightness to adjust the brightness of the screen to 100, or to reduce the darkness;

If the brightness is high, run echo 1000>/sys/class/backlight/intel_backlight/brightness to maximize the brightness;