/usr/share/ri/1.8/system/Module/ is in ri1.8 1.8.7.352-2ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/ri/1.8/system/Module/%3c%3d%3e-i.yaml
/usr/share/ri/1.8/system/Module/%3c%3d-i.yaml
/usr/share/ri/1.8/system/Module/%3c-i.yaml
/usr/share/ri/1.8/system/Module/%3d%3d%3d-i.yaml
/usr/share/ri/1.8/system/Module/%3d%3d-i.yaml
/usr/share/ri/1.8/system/Module/%3e%3d-i.yaml
/usr/share/ri/1.8/system/Module/%3e-i.yaml
/usr/share/ri/1.8/system/Module/alias_method-i.yaml
/usr/share/ri/1.8/system/Module/ancestors-i.yaml
/usr/share/ri/1.8/system/Module/append_features-i.yaml
/usr/share/ri/1.8/system/Module/attr-i.yaml
/usr/share/ri/1.8/system/Module/attr_accessor-i.yaml
/usr/share/ri/1.8/system/Module/attr_reader-i.yaml
/usr/share/ri/1.8/system/Module/attr_writer-i.yaml
/usr/share/ri/1.8/system/Module/autoload%3f-i.yaml
/usr/share/ri/1.8/system/Module/autoload-i.yaml
/usr/share/ri/1.8/system/Module/cdesc-Module.yaml
/usr/share/ri/1.8/system/Module/class_eval-i.yaml
/usr/share/ri/1.8/system/Module/class_exec-i.yaml
/usr/share/ri/1.8/system/Module/class_variable_defined%3f-i.yaml
/usr/share/ri/1.8/system/Module/class_variable_get-i.yaml
/usr/share/ri/1.8/system/Module/class_variable_set-i.yaml
/usr/share/ri/1.8/system/Module/class_variables-i.yaml
/usr/share/ri/1.8/system/Module/const_defined%3f-i.yaml
/usr/share/ri/1.8/system/Module/const_get-i.yaml
/usr/share/ri/1.8/system/Module/const_missing-i.yaml
/usr/share/ri/1.8/system/Module/const_set-i.yaml
/usr/share/ri/1.8/system/Module/constants-c.yaml
/usr/share/ri/1.8/system/Module/constants-i.yaml
/usr/share/ri/1.8/system/Module/define_method-i.yaml
/usr/share/ri/1.8/system/Module/extend_object-i.yaml
/usr/share/ri/1.8/system/Module/extended-i.yaml
/usr/share/ri/1.8/system/Module/freeze-i.yaml
/usr/share/ri/1.8/system/Module/include%3f-i.yaml
/usr/share/ri/1.8/system/Module/include-i.yaml
/usr/share/ri/1.8/system/Module/included-i.yaml
/usr/share/ri/1.8/system/Module/included_modules-i.yaml
/usr/share/ri/1.8/system/Module/instance_method-i.yaml
/usr/share/ri/1.8/system/Module/instance_methods-i.yaml
/usr/share/ri/1.8/system/Module/method_added-i.yaml
/usr/share/ri/1.8/system/Module/method_defined%3f-i.yaml
/usr/share/ri/1.8/system/Module/method_removed-i.yaml
/usr/share/ri/1.8/system/Module/method_undefined-i.yaml
/usr/share/ri/1.8/system/Module/module_eval-i.yaml
/usr/share/ri/1.8/system/Module/module_exec-i.yaml
/usr/share/ri/1.8/system/Module/module_function-i.yaml
/usr/share/ri/1.8/system/Module/name-i.yaml
/usr/share/ri/1.8/system/Module/nesting-c.yaml
/usr/share/ri/1.8/system/Module/new-c.yaml
/usr/share/ri/1.8/system/Module/private-i.yaml
/usr/share/ri/1.8/system/Module/private_class_method-i.yaml
/usr/share/ri/1.8/system/Module/private_instance_methods-i.yaml
/usr/share/ri/1.8/system/Module/private_method_defined%3f-i.yaml
/usr/share/ri/1.8/system/Module/protected-i.yaml
/usr/share/ri/1.8/system/Module/protected_instance_methods-i.yaml
/usr/share/ri/1.8/system/Module/protected_method_defined%3f-i.yaml
/usr/share/ri/1.8/system/Module/public-i.yaml
/usr/share/ri/1.8/system/Module/public_class_method-i.yaml
/usr/share/ri/1.8/system/Module/public_instance_methods-i.yaml
/usr/share/ri/1.8/system/Module/public_method_defined%3f-i.yaml
/usr/share/ri/1.8/system/Module/remove_class_variable-i.yaml
/usr/share/ri/1.8/system/Module/remove_const-i.yaml
/usr/share/ri/1.8/system/Module/remove_method-i.yaml
/usr/share/ri/1.8/system/Module/to_s-i.yaml
/usr/share/ri/1.8/system/Module/undef_method-i.yaml