Code used to create Magento admin user from command line.

create_magento_admin_user.php

#!/usr/bin/env php
<?php
/**
 * create_magento_admin_user.php
 *
 * Place this file to utils folder, one folder
 * up from your web root. If your web root is something
 * else than htdocs then change the path below accordingly.
 *
 * This script creates Magento admin user to current
 * Magento database.
 * Magento has to be installed first!
 *
 * @author Sven Varkel <[email protected]>
 */
require_once '../htdocs/app/Mage.php';
$mage = Mage::app();
echo "This script creates admin user to current Magento instance\nPlease enter data as asked.\n";

/**
 * Prompts for password and returns password string
 *
 * @return string password
 */
function promptForPassword()
{
    $fh = fopen('php://stdin', 'r');
    print 'Password: ';
    `/bin/stty -echo`;
    $password = rtrim(fgets($fh, 64)) or die('Could not read password from input');
    `/bin/stty echo`;
    print "\n";
    fclose($fh);
    return $password;
}

$firstname = readline('First name: ');
$lastname = readline('Last name: ');
$email = readline('Please enter your e-mail: ');
$defaultUserName = \strtolower($firstname) . \strtolower($lastname);
$username = readline('Please enter username (default: ' . $defaultUserName . '): ');
if ($username == '')
    $username = $defaultUserName;
$password = \promptForPassword();
/**
 * @var \Mage_Admin_Model_User
 */
$adminUser = Mage::getModel('Admin/User');
$adminUser = $adminUser->loadByUsername($username);
if (!$adminUser->getId()) {
    $adminUser->setUsername($username);
    $adminUser->setEmail($email);
    $adminUser->setFirstname($firstname);
    $adminUser->setLastname($lastname);
    $adminUser->setPassword($password);
    $adminUser->save();
    $userId = $adminUser->getId();
    $adminRole = Mage::getModel('Admin/Role');
    $adminRole->setUserId($userId);
    $adminRole->setParentId(1);
    $adminRole->setRoleType('U');
    $adminRole->setTreeLevel(2);
    $adminRole->setRoleName(ucfirst($adminUser->getUsername()));
    $adminRole->save();
    echo "Thank you! Your admin account has been created. We sent you e-mail with your admin account details\n";
}