i don't use linus but i think it is the same as windows.
just turn internet mode off.
go into your realbot folder and you will see a file called "
rb_names.txt"
just add the names that you want in here.
or you can add bots in game like this
realbot add 1 5 5 "[rb]chickencurry"
this will add a T bot with skill level 5, and random body model with the name "[rb]chickencurry"
look at this threat, shows you had to do it with a .cfg file.
http://forums.bots-united.com/showthread.php?t=1366
hope this helps