The following command shows all log streams starting wtih the prefix ``2015`` in the log group ``my-logs``::

  aws logs describe-log-streams --log-group-name my-logs --log-stream-name-prefix 2015

Output::

  {
      "logStreams": [
          {
              "creationTime": 1433189871774,
              "arn": "arn:aws:logs:us-west-2:0123456789012:log-group:my-logs:log-stream:20150531",
              "logStreamName": "20150531",
              "storedBytes": 0
          },
          {
              "creationTime": 1433189873898,
              "arn": "arn:aws:logs:us-west-2:0123456789012:log-group:my-logs:log-stream:20150601",
              "logStreamName": "20150601",
              "storedBytes": 0
          }
      ]
  }
