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