/usr/ is in ruby-rack-flash3 1.0.5-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/rack/
/usr/lib/ruby/vendor_ruby/rack/flash.rb
/usr/lib/ruby/vendor_ruby/rack/flash/
/usr/lib/ruby/vendor_ruby/rack/flash/test.rb
/usr/lib/ruby/vendor_ruby/rack-flash.rb
/usr/share/
/usr/share/doc/
/usr/share/doc/ruby-rack-flash3/
/usr/share/doc/ruby-rack-flash3/changelog.Debian.gz
/usr/share/doc/ruby-rack-flash3/README.Debian
/usr/share/doc/ruby-rack-flash3/copyright
/usr/share/doc/ruby-rack-flash3/README.md
/usr/share/doc/ruby-rack-flash3/examples/
/usr/share/doc/ruby-rack-flash3/examples/sinatra_app.rb
/usr/share/doc/ruby-rack-flash3/examples/base_app.ru
/usr/share/doc/ruby-rack-flash3/examples/views/
/usr/share/doc/ruby-rack-flash3/examples/views/show.erb
/usr/share/doc/ruby-rack-flash3/examples/views/index.erb
/usr/share/doc/ruby-rack-flash3/examples/views/layout.erb
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/1.9.1/
/usr/share/rubygems-integration/1.9.1/specifications/
/usr/share/rubygems-integration/1.9.1/specifications/rack-flash3-1.0.5.gemspec
/usr/share/rubygems-integration/2.0/
/usr/share/rubygems-integration/2.0/specifications/
/usr/share/rubygems-integration/2.0/specifications/rack-flash3-1.0.5.gemspec