Doing "ln -s /media/bin/fs2/fs2_open" in /usr/local/bin did not work (dunno why) so I just reinstalled everything and put the fixed binary in my fs2-directory.....
AND IT WORKS!

Thank you very much for your help and your work taylor

Content wise, or just in general?
In general

In general they are pretty difficult to read, for me at least, since the content doesn't stand out all that clearly due to coloring. If it's the same for you, then you aren't alone.
Good to hear that

When its officially released I will rework my german linux guide and post it here, maybe it will help some german linux-users

Just one last question came up about the "-mod"-option:
How important is the order in which I load my mods?
I know I should load the campain I want to play firstly...for example when I want to play Blaise Russel's "Shivans" -> needs Fs1 Port and mediavps
So I do "-mod shivans,Fs1_Port_3,mediavps" or "-mod shivans,mediavps,Fs1_Port_3"? Or doesn't matter?