By default WordPress uses FTP to get plugins and updates. One easy modification can switch this to use our server and make everything automatic.

Since we have not setup FTP on our master server, the default method WordPress uses to download updates won't work. But there's a simple addition we can make to wp-config.php that will allow WordPress to download updates and plugins directly from the server.

printf "34a\ndefine('FS_METHOD', 'direct');\n.\nw\n" | ed wp-config.php

And it's done!