rTorrent is a text-based ncurses BitTorrent client written in C++, based on the libTorrent libraries for Unices (Rakshasa’s own, not the sourceforge libtorrent), with a focus on high performance and good code.
apt-get install rtorrent
apt-get install screen
chaidir@ach:~/.bt$ screen rtorrent file.torrent
chaidir@ach:~/.bt$ screen -r