Use UpdateUser with an Amazon SDK or CLI

bool AwsDoc::IAM::updateUser(const Aws::String &currentUserName,
                             const Aws::String &newUserName,
                             const Aws::Client::ClientConfiguration &clientConfig) {
    Aws::IAM::IAMClient iam(clientConfig);

    Aws::IAM::Model::UpdateUserRequest request;
    request.SetUserName(currentUserName);
    request.SetNewUserName(newUserName);

    auto outcome = iam.UpdateUser(request);
    if (outcome.IsSuccess()) {
        std::cout << "IAM user " << currentUserName <<
                  " successfully updated with new user name " << newUserName <<
                  std::endl;
    }
    else {
        std::cerr << "Error updating user name for IAM user " << currentUserName <<
                  ":" << outcome.GetError().GetMessage() << std::endl;
    }

    return outcome.IsSuccess();
}

To change an IAM user's name

The following update-user command changes the name of the IAM user Bob to Robert.

aws iam update-user \
    --user-name Bob \
    --new-user-name Robert

This command produces no output.

For more information, see Renaming an IAM user group in the Amazon IAM User Guide.

import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.iam.IamClient;
import software.amazon.awssdk.services.iam.model.IamException;
import software.amazon.awssdk.services.iam.model.UpdateUserRequest;

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class UpdateUser {
    public static void main(String[] args) {
        final String usage = """

                Usage:
                    <curName> <newName>\s

                Where:
                    curName - The current user name.\s
                    newName - An updated user name.\s
                """;

        if (args.length != 2) {
            System.out.println(usage);
            System.exit(1);
        }

        String curName = args[0];
        String newName = args[1];
        Region region = Region.AWS_GLOBAL;
        IamClient iam = IamClient.builder()
                .region(region)
                .build();

        updateIAMUser(iam, curName, newName);
        System.out.println("Done");
        iam.close();
    }

    public static void updateIAMUser(IamClient iam, String curName, String newName) {
        try {
            UpdateUserRequest request = UpdateUserRequest.builder()
                    .userName(curName)
                    .newUserName(newName)
                    .build();

            iam.updateUser(request);
            System.out.printf("Successfully updated user to username %s", newName);

        } catch (IamException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}

Update the user.

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

const client = new IAMClient({});

/**
 *
 * @param {string} currentUserName
 * @param {string} newUserName
 */
export const updateUser = (currentUserName, newUserName) => {
  const command = new UpdateUserCommand({
    UserName: currentUserName,
    NewUserName: newUserName,
  });

  return client.send(command);
};

// Load the AWS SDK for Node.js
var AWS = require("aws-sdk");
// Set the region
AWS.config.update({ region: "REGION" });

// Create the IAM service object
var iam = new AWS.IAM({ apiVersion: "2010-05-08" });

var params = {
  UserName: process.argv[2],
  NewUserName: process.argv[3],
};

iam.updateUser(params, function (err, data) {
  if (err) {
    console.log("Error", err);
  } else {
    console.log("Success", data);
  }
});

suspend fun updateIAMUser(
    curName: String?,
    newName: String?,
) {
    val request =
        UpdateUserRequest {
            userName = curName
            newUserName = newName
        }

    IamClient { region = "AWS_GLOBAL" }.use { iamClient ->
        iamClient.updateUser(request)
        println("Successfully updated user to $newName")
    }
}

Example 1: This example renames the IAM user Bob to Robert.

Update-IAMUser -UserName Bob -NewUserName Robert

Example 2: This example changes the path of the IAM User Bob to /Org1/Org2/, which effectively changes the ARN for the user to arn:aws:iam::123456789012:user/Org1/Org2/bob.

Update-IAMUser -UserName Bob -NewPath /Org1/Org2/

def update_user(user_name, new_user_name):
    """
    Updates a user's name.

    :param user_name: The current name of the user to update.
    :param new_user_name: The new name to assign to the user.
    :return: The updated user.
    """
    try:
        user = iam.User(user_name)
        user.update(NewUserName=new_user_name)
        logger.info("Renamed %s to %s.", user_name, new_user_name)
    except ClientError:
        logger.exception("Couldn't update name for user %s.", user_name)
        raise
    return user

  # Updates an IAM user's name
  #
  # @param current_name [String] The current name of the user
  # @param new_name [String] The new name of the user
  def update_user_name(current_name, new_name)
    @iam_client.update_user(user_name: current_name, new_user_name: new_name)
    true
  rescue StandardError => e
    @logger.error("Error updating user name from '#{current_name}' to '#{new_name}': #{e.message}")
    false
  end