name : tag-resource.rst **To add a tag to a resource** The following ``tag-resource`` example adds an owner tag to an AWS IoT Greengrass core device. You can use this tag to control access to the core device based on who owns it. :: aws greengrassv2 tag-resource \ --resource-arn arn:aws:greengrass:us-west-2:123456789012:coreDevices:MyGreengrassCore \ --tags Owner=richard-roe This command produces no output. For more information, see `Tag your resources <https://docs.aws.amazon.com/greengrass/v2/developerguide/tag-resources.html>`__ in the *AWS IoT Greengrass V2 Developer Guide*.