So if i need to understand you correctly in my server folder should contain these files before i start setting up with ./install unzip etc.
the server trg.bz2 file
OA folder with Addons, Common, Expansion and Dta folders
CO folder with Addons, Common, Expansion and Dta folders
Will I need anything else? You have to understand I know nothing about the arma series or how it's addon expansions were made. I am merely doing this for some friends. I got the games though :D