/usr/lib/ruby/vendor_ruby/aruba/platforms/ is in ruby-aruba 0.14.2-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/aruba/platforms/announcer.rb
/usr/lib/ruby/vendor_ruby/aruba/platforms/aruba_file_creator.rb
/usr/lib/ruby/vendor_ruby/aruba/platforms/aruba_fixed_size_file_creator.rb
/usr/lib/ruby/vendor_ruby/aruba/platforms/aruba_logger.rb
/usr/lib/ruby/vendor_ruby/aruba/platforms/command_monitor.rb
/usr/lib/ruby/vendor_ruby/aruba/platforms/determine_disk_usage.rb
/usr/lib/ruby/vendor_ruby/aruba/platforms/determine_file_size.rb
/usr/lib/ruby/vendor_ruby/aruba/platforms/disk_usage_calculator.rb
/usr/lib/ruby/vendor_ruby/aruba/platforms/filesystem_status.rb
/usr/lib/ruby/vendor_ruby/aruba/platforms/local_environment.rb
/usr/lib/ruby/vendor_ruby/aruba/platforms/simple_table.rb
/usr/lib/ruby/vendor_ruby/aruba/platforms/unix_command_string.rb
/usr/lib/ruby/vendor_ruby/aruba/platforms/unix_environment_variables.rb
/usr/lib/ruby/vendor_ruby/aruba/platforms/unix_platform.rb
/usr/lib/ruby/vendor_ruby/aruba/platforms/unix_which.rb
/usr/lib/ruby/vendor_ruby/aruba/platforms/windows_command_string.rb
/usr/lib/ruby/vendor_ruby/aruba/platforms/windows_environment_variables.rb
/usr/lib/ruby/vendor_ruby/aruba/platforms/windows_platform.rb
/usr/lib/ruby/vendor_ruby/aruba/platforms/windows_which.rb