due to popular request (the modders sitting in my home) we have updated some commandline stuff in Mega-Glest as follows:
Linux:
./glest.bin --help
Windows:
glest_game.exe --help
will give you all commandline options and a description of what they do. For modders you may now control which tech trees and which factions should be validated via commandline. To find out how, run the above command on your operating system from a command prompt (ya ya one day maybe we will show a GUI view for Windows users, but not yet)