/usr/lib/ruby/vendor_ruby/web_console/templates/ is in ruby-web-console 2.2.1-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/web_console/templates/_inner_console_markup.html.erb
/usr/lib/ruby/vendor_ruby/web_console/templates/_markup.html.erb
/usr/lib/ruby/vendor_ruby/web_console/templates/_prompt_box_markup.html.erb
/usr/lib/ruby/vendor_ruby/web_console/templates/console.js.erb
/usr/lib/ruby/vendor_ruby/web_console/templates/error_page.js.erb
/usr/lib/ruby/vendor_ruby/web_console/templates/index.html.erb
/usr/lib/ruby/vendor_ruby/web_console/templates/layouts/
/usr/lib/ruby/vendor_ruby/web_console/templates/layouts/inlined_string.erb
/usr/lib/ruby/vendor_ruby/web_console/templates/layouts/javascript.erb
/usr/lib/ruby/vendor_ruby/web_console/templates/main.js.erb
/usr/lib/ruby/vendor_ruby/web_console/templates/style.css.erb