Lists all of the organizational units (OUs) or accounts that arecontained in the specified parent OU or root.Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/organizations/list-children.html
| aws organizations list-children --child-type ORGANIZATIONAL_UNIT --parent-id ou-examplerootid111-exampleouid111 |
| list-parents — AWS CLI 1.16.12 Command Reference : http://docs.aws.amazon.com/cli/latest/reference/organizations/list-children.html |