In a way. Redshift was made before there was a GUI version of f.lux for linux, in dec. 2009, while I released the linux GUI for f.lux in june 2010. Before both there was just a command line app for f.lux on linux.
I have the same problem he had. Flux just doesn't work on my Ubuntu laptop. It seems to be able to preview correctly, it just never adjusts on its own like it's supposed to. Seems to be a common issue.