File: //usr/lib/python3/dist-packages/awscli/examples/greengrass/update-core-definition.rst
**To update a core definition**
The following ``update-core-definition`` example changes the name of the specified core definition. You can update only the ``name`` property of a core definition. ::
aws greengrass update-core-definition \
--core-definition-id "582efe12-b05a-409e-9a24-a2ba1bcc4a12" \
--name "MyCoreDevices"
This command produces no output.
For more information, see `Configure the AWS IoT Greengrass Core <https://docs.aws.amazon.com/greengrass/latest/developerguide/gg-core.html>`__ in the *AWS IoT Greengrass Developer Guide*.