get firefox, install LiveHTTPHeaders plugin,
then follow https://metacpan.org/module/Facebook::Graph::Cookbook::Recipe1
now you'll have a list of url... and a sequence of requests needed to do the token circle dance (whatever it is)
some of the urls redirect towards https://developers.facebook.com/docs/reference/login/, so there might be a nice graphic demonstrating the token circle of communication

the commandline version would just repeat same sequence of requests, but without displaying webpages ... or maybe with webpages ... you can use WWW::Mechanize for that part, but you probably don't have to , see https://metacpan.org/module/Facebook::Graph::BatchRequests, http://developers.facebook.com/docs/reference/api/batch/

Anyway, I don't facebook :)