Compared to Ruby, one liners are more efficient in Perl because the normally infuriating cryptic variables and defaults save space. For example in Perl you can run a foreach without naming the current iteration value and it defaults to $_. $_ in turn is the default target for many commands, like print.
So Perl's `print foreach @a` becomes Ruby's `a.each{|a| print a}`. Not so bad but it adds up.
The only one off the top of my head would be ruby but I don't have that much ruby knowledge to judge.
This kind of thing however is perl's bread and butter.