aws iam get-group
Returns a list of IAM users that are in the specified IAM group. AWS CLI reference
3 options Its page in the AWS CLI reference
Options
--group-nameThe name of the group.--markerUse this parameter only when paginating results and only after you receive a response indicating that the results are truncated.--max-itemsUse this only when paginating results to indicate the maximum number of items you want in the response.