Script for change admin password

misc-change_admin_password.php

<?php

declare(ticks = 1);

// Mage !
require_once __DIR__ . '/../app/Mage.php';

// Usage function :)
function usage()
{
    echo "Usage: php -f " . basename(__FILE__) . " <username>\n";
    exit(65);
}

// Check command line
if ($argc != 2) {
    usage();
}

// Init Magento
Mage::app('admin');

// Init store (needed for save products for example)
Mage::app()->setCurrentStore(Mage_Core_Model_App::ADMIN_STORE_ID);

// We get the user
$user = Mage::getModel('admin/user')->load($argv[1], 'username');

// User exists?
if (!$user->getId()) {
    echo "Bad username.\n\n";
    usage();
}

// We ask for the password
do {
    $password = trim(readline('Wich password?'));
} while (!$password);

// We change the user password :)
$user->setNewPassword($password)->save();

echo "User updated\n";

exit(0);