name : register-task-definition.rst **Example 1: To register a task definition with a JSON file** The following ``register-task-definition`` example registers a task definition to the specified family. The container definitions are saved in JSON format at the specified file location. :: aws ecs register-task-definition \ --cli-input-json file://<path_to_json_file>/sleep360.json Contents of ``sleep360.json``:: { "containerDefinitions": [ { "name": "sleep", "image": "busybox", "cpu": 10, "command": [ "sleep", "360" ], "memory": 10, "essential": true } ], "family": "sleep360" } Output:: { "taskDefinition": { "status": "ACTIVE", "family": "sleep360", "placementConstraints": [], "compatibilities": [ "EXTERNAL", "EC2" ], "volumes": [], "taskDefinitionArn": "arn:aws:ecs:us-east-1:123456789012:task-definition/sleep360:1", "containerDefinitions": [ { "environment": [], "name": "sleep", "mountPoints": [], "image": "busybox", "cpu": 10, "portMappings": [], "command": [ "sleep", "360" ], "memory": 10, "essential": true, "volumesFrom": [] } ], "revision": 1 } } For more information, see `Example task definitions <https://docs.aws.amazon.com/AmazonECS/latest/developerguide/example_task_definitions.html>`_ in the *Amazon ECS Developer Guide*. **Example 2: To register a task definition with a JSON string parameter** The following ``register-task-definition`` example registers a task definition using container definitions provided as a JSON string parameter with escaped double quotes. :: aws ecs register-task-definition \ --family sleep360 \ --container-definitions "[{\"name\":\"sleep\",\"image\":\"busybox\",\"cpu\":10,\"command\":[\"sleep\",\"360\"],\"memory\":10,\"essential\":true}]" The output is identical to the previous example. For more information, see `Creating a Task Definition <https://docs.aws.amazon.com/AmazonECS/latest/developerguide/create-task-definition.html>`_ in the *Amazon ECS Developer Guide*.