Nativement, osCommerce ne génère pas de fichier robots.txt mais il est néanmoins intéressant de bloquer certains répertoires aux moteurs de recherche :
Disallow: /includes
Disallow: /cgi-bin
Disallow: /account.php
Disallow: /account_edit.php
Disallow: /account_history.php
Disallow: /account_history_info.php
Disallow: /account_password.php
Disallow: /add_checkout_success.php
Disallow: /address_book.php
Disallow: /address_book_process.php
Disallow: /advanced_search.php
Disallow: /checkout_confirmation.php
Disallow: /checkout_payment.php
Disallow: /checkout_payment_address.php
Disallow: /checkout_process.php
Disallow: /checkout_shipping.php
Disallow: /checkout_shipping_address.php
Disallow: /checkout_success.php
Disallow: /contact_bean.php
Disallow: /cookie_usage.php
Disallow: /create_account.php
Disallow: /create_account_success.php
Disallow: /login.php
Disallow: /password_forgotten.php
Disallow: /popup_image.php
Disallow: /shopping_cart.php
Disallow: /product_reviews_write.php
Si vous souhaitez spécifier des instructions et des paramètres supplémentaires dans le fichier robots.txt, vous pouvez consulter le manuel d'implémentation du fichier robots.txt