How to retrieve the OCI instance ID from within itself

How to retrieve the OCID of a compute instance in Oracle Cloud from within itself using Instance Metadata (Bash and Python)

Using Bash

INSTANCE_ID=$(curl -s -H "Authorization: Bearer Oracle" http://169.254.169.254/opc/v2/instance/ | jq -r '.id')

Using Python

import requests

instance_id = requests.get(
    "http://169.254.169.254/opc/v2/instance/",
    headers={"Authorization": "Bearer Oracle"},
).json()["id"]

References

1. Oracle: Getting Instance Metadata

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