Using AWS CLI to stop/start instances from the command line

Step 1:- 

Get the instance id's of the running instances

$aws ec2 describe-instances --filters Name=tag-key,Values="Name" --profile apix --output table --query "Reservations[*].Instances[*].InstanceId"

-------------------

|DescribeInstances|

+-----------------+

|  i-6e1b573e     |

|  ....               |

|  i-06ad8956     |

+-----------------+

The above will return an instance id(s)

Step 2:-

With the instance id's we can issue stop/start commands

$aws ec2 stop-instances --instance-ids=<your instance id(s)> --profile <your profile>

{

    "StoppingInstances": [

        {

            "InstanceId": "<instance-id>",

            "CurrentState": {

                "Code": 80,

                "Name": "stopped"

            },

            "PreviousState": {

                "Code": 80,

                "Name": "running"

            }

        }

    ]

}

Step 3 :-

We can start the instances using start-instances command, 

$aws ec2 start-instances --instance-ids=<your instance id(s)> --profile <your profile>

{

    "StartingInstances": [

        {

            "InstanceId": "<instance-id>",

            "CurrentState": {

                "Code": 0,

                "Name": "pending"

            },

            "PreviousState": {

                "Code": 80,

                "Name": "stopped"

            }

        }

    ]

}