Hello,
I taught myself a small amount of Ruby. If perl and python got drunk and made a baby, that is what Ruby feels like to me. I'm not super skilled in either enough to tell you too much, except that I think that a huge advantage of perl is CPAN. Hands down, CPAN is one of the greatest things about perl. I'm sure the number of modules that CPAN has compared to Ruby is significantly more. I found Ruby's way of installing modules to be annoying. Also, I'm not sure if Ruby supports things like $_ and @_ ?
UPDATE: I found this node which may be relevant: Perl Vs Ruby
One more relevant link from the Ruby website -that might help- is here: http://www.ruby-lang.org/en/documentation/ruby-from-other-languages/to-ruby-from-perl/