/usr/share/ri/1.8/system/Object/ 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/Object/%3d%3d%3d-i.yaml
/usr/share/ri/1.8/system/Object/%3d%3d-i.yaml
/usr/share/ri/1.8/system/Object/%3d%7e-i.yaml
/usr/share/ri/1.8/system/Object/__id__-i.yaml
/usr/share/ri/1.8/system/Object/__send__-i.yaml
/usr/share/ri/1.8/system/Object/cdesc-Object.yaml
/usr/share/ri/1.8/system/Object/class-i.yaml
/usr/share/ri/1.8/system/Object/clone-i.yaml
/usr/share/ri/1.8/system/Object/dclone-i.yaml
/usr/share/ri/1.8/system/Object/display-i.yaml
/usr/share/ri/1.8/system/Object/dup-i.yaml
/usr/share/ri/1.8/system/Object/enum_for-i.yaml
/usr/share/ri/1.8/system/Object/eql%3f-i.yaml
/usr/share/ri/1.8/system/Object/equal%3f-i.yaml
/usr/share/ri/1.8/system/Object/extend-i.yaml
/usr/share/ri/1.8/system/Object/freeze-i.yaml
/usr/share/ri/1.8/system/Object/frozen%3f-i.yaml
/usr/share/ri/1.8/system/Object/hash-i.yaml
/usr/share/ri/1.8/system/Object/id-i.yaml
/usr/share/ri/1.8/system/Object/inspect-i.yaml
/usr/share/ri/1.8/system/Object/instance_eval-i.yaml
/usr/share/ri/1.8/system/Object/instance_exec-i.yaml
/usr/share/ri/1.8/system/Object/instance_of%3f-i.yaml
/usr/share/ri/1.8/system/Object/instance_variable_defined%3f-i.yaml
/usr/share/ri/1.8/system/Object/instance_variable_get-i.yaml
/usr/share/ri/1.8/system/Object/instance_variable_set-i.yaml
/usr/share/ri/1.8/system/Object/instance_variables-i.yaml
/usr/share/ri/1.8/system/Object/is_a%3f-i.yaml
/usr/share/ri/1.8/system/Object/kind_of%3f-i.yaml
/usr/share/ri/1.8/system/Object/method-i.yaml
/usr/share/ri/1.8/system/Object/methods-i.yaml
/usr/share/ri/1.8/system/Object/new-c.yaml
/usr/share/ri/1.8/system/Object/nil%3f-i.yaml
/usr/share/ri/1.8/system/Object/object_id-i.yaml
/usr/share/ri/1.8/system/Object/private_methods-i.yaml
/usr/share/ri/1.8/system/Object/protected_methods-i.yaml
/usr/share/ri/1.8/system/Object/public_methods-i.yaml
/usr/share/ri/1.8/system/Object/remove_instance_variable-i.yaml
/usr/share/ri/1.8/system/Object/respond_to%3f-i.yaml
/usr/share/ri/1.8/system/Object/send-i.yaml
/usr/share/ri/1.8/system/Object/singleton_method_added-i.yaml
/usr/share/ri/1.8/system/Object/singleton_method_removed-i.yaml
/usr/share/ri/1.8/system/Object/singleton_method_undefined-i.yaml
/usr/share/ri/1.8/system/Object/singleton_methods-i.yaml
/usr/share/ri/1.8/system/Object/taint-i.yaml
/usr/share/ri/1.8/system/Object/tainted%3f-i.yaml
/usr/share/ri/1.8/system/Object/tap-i.yaml
/usr/share/ri/1.8/system/Object/to_a-i.yaml
/usr/share/ri/1.8/system/Object/to_enum-i.yaml
/usr/share/ri/1.8/system/Object/to_s-i.yaml
/usr/share/ri/1.8/system/Object/to_yaml-i.yaml
/usr/share/ri/1.8/system/Object/to_yaml_properties-i.yaml
/usr/share/ri/1.8/system/Object/to_yaml_style-i.yaml
/usr/share/ri/1.8/system/Object/type-i.yaml
/usr/share/ri/1.8/system/Object/untaint-i.yaml
/usr/share/ri/1.8/system/ObjectSpace/_id2ref-c.yaml
/usr/share/ri/1.8/system/ObjectSpace/add_finalizer-c.yaml
/usr/share/ri/1.8/system/ObjectSpace/call_finalizer-c.yaml
/usr/share/ri/1.8/system/ObjectSpace/cdesc-ObjectSpace.yaml
/usr/share/ri/1.8/system/ObjectSpace/define_finalizer-c.yaml
/usr/share/ri/1.8/system/ObjectSpace/each_object-c.yaml
/usr/share/ri/1.8/system/ObjectSpace/finalizers-c.yaml
/usr/share/ri/1.8/system/ObjectSpace/garbage_collect-c.yaml
/usr/share/ri/1.8/system/ObjectSpace/remove_finalizer-c.yaml
/usr/share/ri/1.8/system/ObjectSpace/undefine_finalizer-c.yaml