Bti sends a tweet message to twitter.com.

bti provides an easy way to send tweet messages directly from the command line or a script. It reads the message on standard input and uses the account and password settings either from the command line options or from a config file to deliver the message.

Besides sending messages bti also allows one to see one's friends', a group's or a specific user's timeline, the public timeline, replies to messages, and direct messages.