f.lux makes your computer screen look like the room you're in, all the time. When the sun sets, it makes your computer look like your indoor lights. In the morning, it makes things look like sunlight again.
F.lux on Linux
Download the daemon https://justgetflux.com/linux.html
Then I put it into my PATH:
In order to start it you have to provide your geographical location via command line.
If you want it to be started on boot, create a file called xflux.desktop in ~/.config/autostart (I'm using gnome maybe/probably this is different for other desktop environments, not sure though). The content of this file is:
Comment=Adapts screen color temperatur according to daytime
Exec=/home/<user>//bin/xflux -l <latitude> -g <longitude>
If you're living in the US you can also use -z <zipcode> instead of latitude and longitude.
f.lux: what's my lat/long?