/usr/ is in ruby-kakasi-ffi 1.0.2-2.
This file is owned by root:root, with mode 0o755.
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/usr/lib/
/usr/share/
/usr/share/doc/
/usr/share/doc/ruby-kakasi-ffi/
/usr/share/doc/ruby-kakasi-ffi/changelog.Debian.gz
/usr/share/doc/ruby-kakasi-ffi/copyright
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/2.3.0/
/usr/share/rubygems-integration/2.3.0/specifications/
/usr/share/rubygems-integration/2.3.0/specifications/kakasi-1.0.2.gemspec
/usr/share/rubygems-integration/2.2.0/
/usr/share/rubygems-integration/2.2.0/specifications/
/usr/share/rubygems-integration/2.2.0/specifications/kakasi-1.0.2.gemspec
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/ruby/
/usr/lib/x86_64-linux-gnu/ruby/vendor_ruby/
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/kakasi.rb
/usr/lib/ruby/vendor_ruby/kakasi/
/usr/lib/ruby/vendor_ruby/kakasi/version.rb
/usr/lib/ruby/vendor_ruby/kakasi/ffi.rb
/usr/lib/ruby/vendor_ruby/kakasi/platform.rb
/usr/lib/ruby/vendor_ruby/kakasi/fiddle.rb
/usr/lib/ruby/vendor_ruby/kakasi/dl.rb