How to Install the F.lux Indicator on Ubuntu 13.04 via Command Line Interface

Hello Linux Geeksters. In this article I will show you how to install the F.lux indicator on Ubuntu 13.04 Raring Ringtail via command line interface.

Actually, it is very simple, all you have to do is this:

Step 1. Add these lines to your /etc/apt/sources.list:

deb http://ppa.launchpad.net/kilian/f.lux/ubuntu raring main
deb-src http://ppa.launchpad.net/kilian/f.lux/ubuntu raring main

Step 2. Update the repository index:

$ sudo apt-get update

Step 3. Install F.lux:

$ sudo apt-get install fluxgui

This is it. Enjoy.

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3 comments on “How to Install the F.lux Indicator on Ubuntu 13.04 via Command Line Interface
  1. Mohamed Ahmed says:

    After performing
    $ sudo apt-get update

    I got:

    W: Failed to fetch http://ppa.launchpad.net/kilian/f.lux/ubuntu/dists/raring/main/source/Sources 404 Not Found

    W: Failed to fetch http://ppa.launchpad.net/kilian/f.lux/ubuntu/dists/raring/main/binary-amd64/Packages 404 Not Found

    W: Failed to fetch http://ppa.launchpad.net/kilian/f.lux/ubuntu/dists/raring/main/binary-i386/Packages 404 Not Found

    E: Some index files failed to download. They have been ignored, or old ones used instead.

    How should I fix that?

  2. Alain O'Dea says:

    I followed a different approach which also worked:

    sudo add-apt-repository ppa:kilian/f.lux
    sudo apt-get update
    sudo apt-get install fluxgui

    Less error prone than mucking about directly with source.list and the PPA PGP keys.

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