/usr/lib/ruby/vendor_ruby/specinfra/helper/detect_os/ is in ruby-specinfra 2.66.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/specinfra/helper/detect_os/aix.rb
/usr/lib/ruby/vendor_ruby/specinfra/helper/detect_os/alpine.rb
/usr/lib/ruby/vendor_ruby/specinfra/helper/detect_os/arch.rb
/usr/lib/ruby/vendor_ruby/specinfra/helper/detect_os/coreos.rb
/usr/lib/ruby/vendor_ruby/specinfra/helper/detect_os/darwin.rb
/usr/lib/ruby/vendor_ruby/specinfra/helper/detect_os/debian.rb
/usr/lib/ruby/vendor_ruby/specinfra/helper/detect_os/eos.rb
/usr/lib/ruby/vendor_ruby/specinfra/helper/detect_os/esxi.rb
/usr/lib/ruby/vendor_ruby/specinfra/helper/detect_os/freebsd.rb
/usr/lib/ruby/vendor_ruby/specinfra/helper/detect_os/gentoo.rb
/usr/lib/ruby/vendor_ruby/specinfra/helper/detect_os/nixos.rb
/usr/lib/ruby/vendor_ruby/specinfra/helper/detect_os/openbsd.rb
/usr/lib/ruby/vendor_ruby/specinfra/helper/detect_os/plamo.rb
/usr/lib/ruby/vendor_ruby/specinfra/helper/detect_os/poky.rb
/usr/lib/ruby/vendor_ruby/specinfra/helper/detect_os/redhat.rb
/usr/lib/ruby/vendor_ruby/specinfra/helper/detect_os/solaris.rb
/usr/lib/ruby/vendor_ruby/specinfra/helper/detect_os/suse.rb