This one-liner checks the current sum of download speed of all torrents currently running in transmission-daemon. You can also direct the output to a file, to have a logfile of it.
I’ve started writing the original version of this tutorial in 2014, and back then I had less experience in managing Linux users, permissions and services, and also the official OS of Raspberry Pi, the Raspbian was a bit different, too. The below how-to is a major re-write of the original, and it’s intended to be configured on a Raspberry Pi 3B+ and Raspbian Stretch Lite (2018-06-27).
It’s a work in progress, so please be warned!
Now, on to the interesting stuff…
Downloading (legal) content using torrents is very convenient, but if you plan to keep the files “seeding” which is the term to allow them to be uploaded back to other users, then you’ll need to keep your computer running 24/7 which won’t be good for your electricity bills. For this reason it’s a nice idea to use a Raspberry Pi as a “torrent server” a.k.a “seedbox” which will run day and night, as it’s power consumption is tiny compared to a laptop, let alone a desktop PC.
We’ll be using Transmission as a torrent client, which can be installed as a “daemon” running in the background all the time on the Raspberry Pi.