/usr/ is in ruby-rethtool 0.0.5-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/rethtool-0.0.5.gemspec
/usr/share/doc/
/usr/share/doc/ruby-rethtool/
/usr/share/doc/ruby-rethtool/copyright
/usr/share/doc/ruby-rethtool/README.rdoc
/usr/share/doc/ruby-rethtool/changelog.Debian.gz
/usr/lib/
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/rethtool/
/usr/lib/ruby/vendor_ruby/rethtool/ethtool_cmd.rb
/usr/lib/ruby/vendor_ruby/rethtool/interface_settings.rb
/usr/lib/ruby/vendor_ruby/rethtool/link_status.rb
/usr/lib/ruby/vendor_ruby/rethtool/ethtool_value.rb
/usr/lib/ruby/vendor_ruby/rethtool.rb