Enabling f.lux PPA on Ubuntu Based
The Tip Show How-to Add the fluxgui PPA Apt Repo for Linux Ubuntu Based GNU/Linux Desktops.
f.lux is a proprietary computer program that Adjusts a Display’s Color Temperature according to Location and Time of day.
For further Information about the Available Ubuntu Version’s of the Package see the f.lux GUI on launchpad.
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Open a Command Line Console Session
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Enabling the fluxgui Apt PPA
sudo apt-add-repository -y ppa:nathan-renniewaldock/flux
If Got “User is Not in Sudoers file” then Look: Solution
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Refreshing Apt Repositories
sudo apt-get update