Use ListGroups with an Amazon SDK or command line tool

    /// <summary>
    /// List IAM groups.
    /// </summary>
    /// <returns>A list of IAM groups.</returns>
    public async Task<List<Group>> ListGroupsAsync()
    {
        var groupsPaginator = _IAMService.Paginators.ListGroups(new ListGroupsRequest());
        var groups = new List<Group>();

        await foreach (var response in groupsPaginator.Responses)
        {
            groups.AddRange(response.Groups);
        }

        return groups;
    }

To list the IAM groups for the current account

The following list-groups command lists the IAM groups in the current account.

aws iam list-groups

Output:

{
    "Groups": [
        {
            "Path": "/",
            "CreateDate": "2013-06-04T20:27:27.972Z",
            "GroupId": "AIDACKCEVSQ6C2EXAMPLE",
            "Arn": "arn:aws:iam::123456789012:group/Admins",
            "GroupName": "Admins"
        },
        {
            "Path": "/",
            "CreateDate": "2013-04-16T20:30:42Z",
            "GroupId": "AIDGPMS9RO4H3FEXAMPLE",
            "Arn": "arn:aws:iam::123456789012:group/S3-Admins",
            "GroupName": "S3-Admins"
        }
    ]
}

For more information, see Managing IAM user groups in the Amazon IAM User Guide.

// GroupWrapper encapsulates AWS Identity and Access Management (IAM) group actions
// used in the examples.
// It contains an IAM service client that is used to perform group actions.
type GroupWrapper struct {
	IamClient *iam.Client
}



// ListGroups lists up to maxGroups number of groups.
func (wrapper GroupWrapper) ListGroups(maxGroups int32) ([]types.Group, error) {
	var groups []types.Group
	result, err := wrapper.IamClient.ListGroups(context.TODO(), &iam.ListGroupsInput{
		MaxItems: aws.Int32(maxGroups),
	})
	if err != nil {
		log.Printf("Couldn't list groups. Here's why: %v\n", err)
	} else {
		groups = result.Groups
	}
	return groups, err
}

List the groups.

import { ListGroupsCommand, IAMClient } from "@aws-sdk/client-iam";

const client = new IAMClient({});

/**
 * A generator function that handles paginated results.
 * The AWS SDK for JavaScript (v3) provides {@link https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/index.html#paginators | paginator} functions to simplify this.
 */
export async function* listGroups() {
  const command = new ListGroupsCommand({
    MaxItems: 10,
  });

  let response = await client.send(command);

  while (response.Groups?.length) {
    for (const group of response.Groups) {
      yield group;
    }

    if (response.IsTruncated) {
      response = await client.send(
        new ListGroupsCommand({
          Marker: response.Marker,
          MaxItems: 10,
        }),
      );
    } else {
      break;
    }
  }
}

$uuid = uniqid();
$service = new IAMService();

    public function listGroups($pathPrefix = "", $marker = "", $maxItems = 0)
    {
        $listGroupsArguments = [];
        if ($pathPrefix) {
            $listGroupsArguments["PathPrefix"] = $pathPrefix;
        }
        if ($marker) {
            $listGroupsArguments["Marker"] = $marker;
        }
        if ($maxItems) {
            $listGroupsArguments["MaxItems"] = $maxItems;
        }

        return $this->iamClient->listGroups($listGroupsArguments);
    }

Example 1: This example returns a collection of all the IAM groups defined in the current Amazon Web Services account.

Get-IAMGroupList

Output:

Arn        : arn:aws:iam::123456789012:group/Administrators
CreateDate : 10/20/2014 10:06:24 AM
GroupId    : 6WCH4TRY3KIHIEXAMPLE1
GroupName  : Administrators
Path       : /

Arn        : arn:aws:iam::123456789012:group/Developers
CreateDate : 12/10/2014 3:38:55 PM
GroupId    : ZU2EOWMK6WBZOEXAMPLE2
GroupName  : Developers
Path       : /

Arn        : arn:aws:iam::123456789012:group/Testers
CreateDate : 12/10/2014 3:39:11 PM
GroupId    : RHNZZGQJ7QHMAEXAMPLE3
GroupName  : Testers
Path       : /

def list_groups(count):
    """
    Lists the specified number of groups for the account.

    :param count: The number of groups to list.
    """
    try:
        for group in iam.groups.limit(count):
            logger.info("Group: %s", group.name)
    except ClientError:
        logger.exception("Couldn't list groups for the account.")
        raise

# A class to manage IAM operations via the AWS SDK client
class IamGroupManager
  # Initializes the IamGroupManager class
  # @param iam_client [Aws::IAM::Client] An instance of the IAM client
  def initialize(iam_client, logger: Logger.new($stdout))
    @iam_client = iam_client
    @logger = logger
  end

  # Lists up to a specified number of groups for the account.
  # @param count [Integer] The maximum number of groups to list.
  # @return [Aws::IAM::Client::Response]
  def list_groups(count)
    response = @iam_client.list_groups(max_items: count)
    response.groups.each do |group|
      @logger.info("\t#{group.group_name}")
    end
    response
  rescue Aws::Errors::ServiceError => e
    @logger.error("Couldn't list groups for the account. Here's why:")
    @logger.error("\t#{e.code}: #{e.message}")
    raise
  end
end

pub async fn list_groups(
    client: &iamClient,
    path_prefix: Option<String>,
    marker: Option<String>,
    max_items: Option<i32>,
) -> Result<ListGroupsOutput, SdkError<ListGroupsError>> {
    let response = client
        .list_groups()
        .set_path_prefix(path_prefix)
        .set_marker(marker)
        .set_max_items(max_items)
        .send()
        .await?;

    Ok(response)
}

    public func listGroups() async throws -> [String] {
        var groupList: [String] = []
        var marker: String? = nil
        var isTruncated: Bool
        
        repeat {
            let input = ListGroupsInput(marker: marker)
            let output = try await client.listGroups(input: input)
            
            guard let groups = output.groups else {
                return groupList
            }

            for group in groups {
                if let name = group.groupName {
                    groupList.append(name)
                }
            }
            marker = output.marker
            isTruncated = output.isTruncated
        } while isTruncated == true
        return groupList
    }