/usr/ is in ruby-cmdparse 2.0.6-1.
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/cmdparse.rb
/usr/lib/ruby/vendor_ruby/cmdparse/
/usr/lib/ruby/vendor_ruby/cmdparse/wrappers/
/usr/lib/ruby/vendor_ruby/cmdparse/wrappers/optparse.rb
/usr/share/
/usr/share/doc/
/usr/share/doc/ruby-cmdparse/
/usr/share/doc/ruby-cmdparse/README.md
/usr/share/doc/ruby-cmdparse/changelog.Debian.gz
/usr/share/doc/ruby-cmdparse/copyright
/usr/share/doc/ruby-cmdparse/examples/
/usr/share/doc/ruby-cmdparse/examples/net.rb
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/cmdparse-2.0.6.gemspec
/usr/lib/ruby/vendor_ruby/cmdparse2.rb