How to find the source of where a Module was defined if there are no methods defined inside it but it was included somwhere? Interesting question.
http://stackoverflow.com/questions/22239501/how-to-find-a-modules-location
One can use ps aux or other stuff, what I have found is following works quite well:
begin
Process.kill(0, pid)
rescue Errno::ESRCH
# process is not running
end