Ha. That's a throwback.

I did the same thing, but with a more detailed writeup, in 2009: https://nuxx.net/blog/2009/12/06/time-machine-for-freebsd/

It was really handy, but I now use borg as it just works better.

HA! It read your post I read back then and I have been using it ever since. So thank you. I guess I need to check out borg ;)