有无配置文件可以达到像xrandr命令的效果?(即通过配置文件而非运行命令的方式实现xrandr)

man xrandr看帮助时，里面提供了一个xbacklight
--brightness brightness
Multiply the gamma values on the crtc currently attached to the output to specified floating value. Useful for overly bright or overly dim outputs. However, this is a software only modification, if your hardware has support to actually change the brightness, you will probably prefer to use xbacklight.

$ apt-cache show xbacklight | grep -A2 Description-en
Description-en: simple utility to set the backlight level
xbacklight is a simple command-line utility to set the backlight level
using the RandR 1.2 Backlight output property.


还有一个redshift，通过调整显示器色温来控制屏幕所发射出来的有害蓝光，并根据你所在的时区和时间自动调整，听说可以防止长时间盯着屏幕的人不至于那么早失明……
redshift - Set color temperature of display according to time of day.

xbacklight只能在硬件支持的情况下适用
redshift调节的是色温,不过这真的有必要?
记得以前电视上说过普通的显示器蓝光没那么夸张.

Tue Jan 31 20:24:45 CST 2017 补充:
另外我的目的不止亮度,就是xrandr命令能否有什么配置文件代替
就像xset的一些设置可以用xorg.conf来设置

https://www.x.org/wiki/Projects/XRandR/
RandR Documentation