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**To get a system instance**
The following ``get-system-instance`` example gets a definition for a system instance. ::
aws iotthingsgraph get-system-instance \
--id "urn:tdm:us-west-2/123456789012/default:Deployment:Room218"
Output::
{
"description": {
"summary": {
"id": "urn:tdm:us-west-2/123456789012/default:Deployment:Room218",
"arn": "arn:aws:iotthingsgraph:us-west-2:123456789012:Deployment/default/Room218",
"status": "NOT_DEPLOYED",
"target": "CLOUD",
"createdAt": 1559249315.208,
"updatedAt": 1559249315.208
},
"definition": {
"language": "GRAPHQL",
"text": "{\r\nquery Room218 @deployment(id: \"urn:tdm:us-west-2/123456789012/default:Deployment:Room218\", systemId: \"urn:tdm:us-west-2/123456789012/default:System:SecurityFlow\") {\r\n motionSensor(deviceId: \"MotionSensorName\")\r\n screen(deviceId: \"ScreenName\")\r\n camera(deviceId: \"CameraName\") \r\n triggers {MotionEventTrigger(description: \"a trigger\") { \r\n condition(expr: \"devices[name == 'motionSensor'].events[name == 'StateChanged'].lastEvent\") \r\n action(expr: \"ThingsGraph.startFlow('SecurityFlow', bindings[name == 'camera'].deviceId, bindings[name == 'screen'].deviceId)\")\r\n }\r\n }\r\n }\r\n }"
},
"metricsConfiguration": {
"cloudMetricEnabled": false
},
"validatedNamespaceVersion": 5,
"flowActionsRoleArn": "arn:aws:iam::123456789012:role/ThingsGraphRole"
}
}
For more information, see `Working with Systems and Flow Configurations <https://docs.aws.amazon.com/thingsgraph/latest/ug/iot-tg-sysdeploy.html>`__ in the *AWS IoT Things Graph User Guide*.
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