/usr/ is in ruby-rails-autolink 1.1.6-1.
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/rails_autolink.rb
/usr/lib/ruby/vendor_ruby/rails_autolink/
/usr/lib/ruby/vendor_ruby/rails_autolink/helpers.rb
/usr/lib/ruby/vendor_ruby/rails_autolink/version.rb
/usr/share/
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/rails_autolink-1.1.6.gemspec
/usr/share/doc/
/usr/share/doc/ruby-rails-autolink/
/usr/share/doc/ruby-rails-autolink/copyright
/usr/share/doc/ruby-rails-autolink/README.rdoc
/usr/share/doc/ruby-rails-autolink/changelog.Debian.gz