GNU/Linux Ubuntu 20.04 Installing Redshift – Step by step Guide
How to Install Redshift on Ubuntu 20.04 Focal LTS GNU/Linux – Step by step Tutorial.
And Redshift for Ubuntu Focal adjusts the Color Temperature according to the position of the Sun.
So as a Blue Light Filter a different Color Temperature is set during Night and Daytime.
Moreover, during twilight and early Morning, the Color Temperature transitions smoothly from Night to daytime temperature to allow your Eyes to slowly adapt. At Night the Color Temperature should be set to match the Lamps in your Room.
Especially relevant: on GNOME instead you may simply make use of the Night Light Settings Applet!
1. Terminal QuickStart
How to QuickStart with Command Line on Ubuntu
First, Update the Apt Repo Sources with:
sudo apt update
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