/usr/ is in ruby-ogginfo 0.7.2-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/
/usr/lib/ruby/vendor_ruby/ogg/
/usr/lib/ruby/vendor_ruby/ogg/page.rb
/usr/lib/ruby/vendor_ruby/ogg/writer.rb
/usr/lib/ruby/vendor_ruby/ogg/reader.rb
/usr/lib/ruby/vendor_ruby/ogg/codecs/
/usr/lib/ruby/vendor_ruby/ogg/codecs/vorbis.rb
/usr/lib/ruby/vendor_ruby/ogg/codecs/opus.rb
/usr/lib/ruby/vendor_ruby/ogg/codecs/comments.rb
/usr/lib/ruby/vendor_ruby/ogg/codecs/speex.rb
/usr/lib/ruby/vendor_ruby/ogg.rb
/usr/lib/ruby/vendor_ruby/ogginfo.rb
/usr/share/
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/ruby-ogginfo-0.7.2.gemspec
/usr/share/doc/
/usr/share/doc/ruby-ogginfo/
/usr/share/doc/ruby-ogginfo/README.txt
/usr/share/doc/ruby-ogginfo/copyright
/usr/share/doc/ruby-ogginfo/changelog.Debian.gz