[LAU] Record / playback MIDI through MIDI <--> USB cable?

Hi, I'm on an Arch Linux system, and now have an old Yamaha PSR-220 (TM) "portable keyboard" and an iConnectivity Mio (TM) MIDI to USB cable. My MIDI-fu is extremely limited. When I plug in the cable, it shows up (sans name) in lsusb as "Bus 001 Device 005: ID 2321:000a" What is a good way to save keyboard stuff as .mid files and vice-versa (play MIDI files out to the keyboard)? Last week I fooled around with cat'ing to and from /dev/snd/midiC1D0 as mentioned in [https://askubuntu.com/questions/633185/how-to-send-midi-raw-data-to-a-midi-…] and was able to get "noise" sending a MIDI file out, and get "garbage" from the keyboard. I just don't know the RIGHT way to do stuff. (My web searches weren't turning up obvious leads, which is how I ended up at the above. It sounded like the closest to what I was trying to ask.) Thanks.