bitcoind does not need any command line options; it runs as a daemon. I'll just quote the wikipedia definition of
daemon for you:
- a daemon (/ˈdeɪmən/ or /ˈdiːmən/)[1] is a computer program that runs as a background process, rather than being under the direct control of an interactive user.
What you can do is start the daemon, and then in a second window, issue
RPC commands to the server:
bitcoind getblockcount
Returns the number of blocks in the longest block chain.
bitcoind getbalance
Returns the server’s total available balance.
bitcoind sendtoaddress <bitcoinaddress> <amount> [comment] [comment-to]
<amount> is a real and is rounded to the nearest 0.00000001
and then to stop the daemon without completely corrupting your wallet:
bitcoind stop