/usr/lib/ruby/ is in libnora-ruby1.8 1:0.0.20041021-4.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/1.8/
/usr/lib/ruby/1.8/web.rb
/usr/lib/ruby/1.8/web/
/usr/lib/ruby/1.8/web/agent.rb
/usr/lib/ruby/1.8/web/response.rb
/usr/lib/ruby/1.8/web/common.rb
/usr/lib/ruby/1.8/web/escape.rb
/usr/lib/ruby/1.8/web/interface.rb
/usr/lib/ruby/1.8/web/template.rb
/usr/lib/ruby/1.8/web/cookie.rb
/usr/lib/ruby/1.8/web/persistent.rb
/usr/lib/ruby/1.8/web/request.rb
/usr/lib/ruby/1.8/web/controller.rb
/usr/lib/ruby/1.8/web/linkextor.rb
/usr/lib/ruby/1.8/web/css/
/usr/lib/ruby/1.8/web/css/scan.rb
/usr/lib/ruby/1.8/web/css/scan.rl
/usr/lib/ruby/1.8/web/agent/
/usr/lib/ruby/1.8/web/agent/passwordmanager.rb
/usr/lib/ruby/1.8/web/agent/robots.rb
/usr/lib/ruby/1.8/web/agent/lirs.rb
/usr/lib/ruby/1.8/web/agent/forms.rb
/usr/lib/ruby/1.8/web/agent/hina-di.rb
/usr/lib/ruby/1.8/web/agent/cookiemanager.rb
/usr/lib/ruby/1.8/web/persistent/
/usr/lib/ruby/1.8/web/persistent/lock.rb
/usr/lib/ruby/1.8/web/persistent/idgen.rb
/usr/lib/ruby/1.8/web/persistent/serialize.rb
/usr/lib/ruby/1.8/web/persistent/store.rb
/usr/lib/ruby/1.8/web/persistent/lock/
/usr/lib/ruby/1.8/web/persistent/lock/null.rb
/usr/lib/ruby/1.8/web/persistent/lock/w32mutex.rb
/usr/lib/ruby/1.8/web/persistent/lock/flock.rb
/usr/lib/ruby/1.8/web/persistent/serialize/
/usr/lib/ruby/1.8/web/persistent/serialize/marshal.rb
/usr/lib/ruby/1.8/web/persistent/idgen/
/usr/lib/ruby/1.8/web/persistent/idgen/default.rb
/usr/lib/ruby/1.8/web/persistent/store/
/usr/lib/ruby/1.8/web/persistent/store/dbi.rb
/usr/lib/ruby/1.8/web/persistent/store/dbm.rb
/usr/lib/ruby/1.8/web/persistent/store/gdbm.rb
/usr/lib/ruby/1.8/web/controller/
/usr/lib/ruby/1.8/web/controller/polystate.rb
/usr/lib/ruby/1.8/web/controller/simple.rb
/usr/lib/ruby/1.8/web/interface/
/usr/lib/ruby/1.8/web/interface/fastcgi.rb
/usr/lib/ruby/1.8/web/interface/rubymail.rb
/usr/lib/ruby/1.8/web/interface/cgi.rb
/usr/lib/ruby/1.8/web/interface/mod_ruby.rb
/usr/lib/ruby/1.8/web/interface/rinda.rb
/usr/lib/ruby/1.8/web/interface/basic.rb
/usr/lib/ruby/1.8/x86_64-linux/
/usr/lib/ruby/1.8/x86_64-linux/web/
/usr/lib/ruby/1.8/x86_64-linux/web/escape_ext.so