# gummy > Screen brightness/temperature manager for Linux/X11. > More information: . - Set the screen temperature to 3000K: `gummy --temperature {{3000}}` - Set the screen backlight to 50%: `gummy --backlight {{50}}` - Set the screen pixel brightness to 45%: `gummy --brightness {{45}}` - Increase current screen pixel brightness by 10%: `gummy --brightness {{+10}}` - Decrease current screen pixel brightness by 10%: `gummy --brightness {{-10}}` - Set the temperature and pixel brightness for the second screen: `gummy --screen {{1}} --temperature {{3800}} --brightness {{65}}`