I am currently researching into federated search, i have read a lot of materials and i think theoretically am ok. I downloaded Lemur 4.1 on ubuntu to try my hands on some experiments already conducted. I am very confused now, because in some articles i see people using Java and C++ to create Index and all, in other articles i see these can be created under the terminal of linux. Please how do i do a typical federated search experiment. Typically , what are the step by step procedure to follow. I really need help.