Twitinal is a project mainly written in Ruby, it's free.
Twitter + Terminal = Twitinal
$ gem install twitinal
$ twitinal {username}
twitinal watches the user, and do it.
You may need to install rubytter on ahead.
$ gem install rubytter
There are some application of "Twitter + Terminal". Termtter is one of the most successful one, which is a twitter client application works on a terminal.
Twitinal is the opposite one. Twitinal is a terminal application works on a twitter.
ujihisa http://ujihisa.blogspot.com/