fedora 25 Replace xflux with redshift
xflux does not work with new fedora version any more (and likely will never do). Redshift is a good replacement in this case. It supports different methods to change color temperature of the screen and can use system location service to determine the location. Install redshift:
sudo dnf install redshift
[Desktop Entry]
Type=Application
Name=redshift
Comment=Redshift
Exec=/usr/bin/redshift
Terminal=false
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