This can be achieved by using the ultra-lightweight text-based BitTorrent client “rTorrent”.
If you are using Ubuntu, you can install rTorrent via Synaptic Package Manager, or with this command:
$ sudo apt-get install rtorrent
You can also get rTorrent HERE.
$ rtorrent filename.torrent
By default the downloads (finished and unfinished) will be saved in your home directory.
See this post for more info.