Install Magento Extensions via SSH

To install magento extensions via SSH, run the following commands from the directory where Magento is installed: Magento 1.5+

chmod 550 mage

./mage mage-setup .

./mage config-set preferred_state stable

./mage install http://connect20.magentocommerce.com/REPO PACKAGE_NAME'

Replace http://connect20.magentocommerce.com/REPO PACKAGE_NAME with the magento connect code for the module you are installing

@http://magentotoolkit.com/wordpress/ssh-install-magento-extensions/