Magento Shell Script that Removes a specific attribute via CLI argument.

attribute-remove.php

<?php
/*
 * Removes a specific attribute.
 * [email protected]
 *
 * Usage:  php -f attribute-remove.php [attribute_name]
 */

require_once 'abstract.php';

ob_implicit_flush(true);
umask(0);
ini_set('display_errors', 1);
ini_set('memory_limit', '2048M');

class CatalogSync_New_Shell extends Mage_Shell_Abstract
{

    /**
     * Run script
     *
     */
    public function run()
    {
        Mage::setIsDeveloperMode(true);
        Mage::app()->setCurrentStore(Mage_Core_Model_App::ADMIN_STORE_ID);

        if ($this->getArg('help')) {

            echo $this->usageHelp();

        } else {

            foreach($this->_args as $attr => $value) {}

            $attributeInfo = Mage::getResourceModel('eav/entity_attribute_collection')
                            ->setCodeFilter($attr)
                            ->getFirstItem();

            if($attributeInfo->getAttributeId() === NULL) { die("Attribute not found. \n\r"); }

            $setup = Mage::getResourceModel('catalog/setup', 'core_setup');
            try {
                $setup->startSetup();
                $setup->removeAttribute('catalog_product', $attr);
                $setup->endSetup();
                echo $attr . " attribute is removed. \n\r";
            } catch (Mage_Core_Exception $e) {
                zend_debug::dump($e->getMessage());
            }

        }
    }

    /**
     * cURL call via POST to REST service & return XML
     *
     */

    // Mage::getStoreConfig('verizonapi/catalog_sync_promotion_detail/url')
    public function curlRequest($service_url, $method = "POST", $postData = array(), $returnXml = true) {

        if(empty($service_url)) {
            throw new Exception("No Service URL provided.");
            return false;
        }
        $curl = curl_init($service_url);

        if($method == "POST") {
            curl_setopt($curl, CURLOPT_POST, true);
            curl_setopt($curl, CURLOPT_POSTFIELDS, $postData);
        }

        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);

        $curl_response = curl_exec($curl);
        curl_close($curl);

        if($returnXml) {
            return $xml = new SimpleXMLElement($curl_response);
        } else {
            return $curl_response;
        }
    }


    /**
     * Retrieve Usage Help Message
     *
     */
    public function usageHelp()
    {
        return <<<USAGE

  Process a promotionId from Catalog Sync

  help                  This help
USAGE;
    }
}

$shell = new CatalogSync_New_Shell();
$shell->run();