ruby setup.rb when i type this i am getting a error
$ ruby setup.rb
/usr/lib/ruby/2.2.0/rubygems.rb:8:in require': cannot load such file -- rbconfig (LoadError) from /usr/lib/ruby/2.2.0/rubygems.rb:8:in
< top (required) >’
from < internal:gem_prelude >:1:in require' from <internal:gem_prelude>:1:in
< compiled > ’
I am completely new to it. Somebody please help me.
I am using win 7