The guide is based on installing on a node setup using the Raspibolt steps, but it should be easy to adapt for other Raspberry Pi or Linux-based setups.
The following steps will guide you on how to install the Transmission torrent daemon & client and then download and seed the bitcoin torrent. I chose to use Transmission since it seems to be the default client for Linux distros like Ubuntu and it has a pretty friendly cli interface to control the daemon from.
Future improvements could include automatic steps for verifying the magnet link and downloaded files before continuing to seed using transmission-remote
's --torrent-done-script
flag to pause the torrent if any checks fail (see this twitter thread)