This seems quite basic to me, and it worked with rio-0.3.3:
require 'rubygems'
require 'rio'
rio("test").mkdir
But with rio-0.3.4 it says:
/usr/local/lib/ruby/gems/1.8/gems/rio-0.3.4/lib/rio/ops/dir.rb:77:
uninitialized constant RIO::Ops::FileOrDir::ExistOrNot (NameError)
my ruby is:
ruby 1.8.4 (2005-12-24) [i686-linux]
···
--
Wybo