I was wondering if I can make a query via the console on how much btc a specific address has without having to go into blockchain.info. What is this command?
There is no such command. Addresses are like a superstructure over a bitcoin transaction processing. Client does not maintain index with addresses and balances on them.
There is no command in bitcoind to view the balance of a single wallet. Your best luck is setting up a script with cURL that gets the data from api.