To be able to show any information about the files, seeders, leechers and the current trackers, install the optional dependency . It is advised to enable DHT inside the Settings to avoid slow speeds and low amount of seeders.
Script to manage it in command line
Since KTorrent is a GUI only application, it fortunately has a DBUS interface, so you can use scripts to manage it in command line (i.e. from SSH). See the following linuxquestions forum answer for details.