/usr/ is in ruby-xmlhash 1.3.6-2build4.
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/xmlhash.rb
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/ruby/
/usr/lib/x86_64-linux-gnu/ruby/vendor_ruby/
/usr/lib/x86_64-linux-gnu/ruby/vendor_ruby/2.5.0/
/usr/lib/x86_64-linux-gnu/ruby/vendor_ruby/2.5.0/xmlhash/
/usr/lib/x86_64-linux-gnu/ruby/vendor_ruby/2.5.0/xmlhash/xmlhash.so
/usr/share/
/usr/share/doc/
/usr/share/doc/ruby-xmlhash/
/usr/share/doc/ruby-xmlhash/README.txt
/usr/share/doc/ruby-xmlhash/changelog.Debian.gz
/usr/share/doc/ruby-xmlhash/copyright
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/2.5.0/
/usr/share/rubygems-integration/2.5.0/specifications/
/usr/share/rubygems-integration/2.5.0/specifications/xmlhash-1.3.6.gemspec