1. Add key
curl https://ftp-master.debian.org/keys/archive-key-10.asc | gpg --import 
gpg --export DC30D7C23CBBABEE | apt-key add -

The fingerprint (DC30D7C23CBBABEE) given is the one that the first command outputs, which is the fingerprint of the key downloaded by curl.

2. Add repo

echo "deb http://deb.debian.org/debian buster-backports main" |sudo tee /etc/apt/sources.list.d/deb_buster_backports.list
  1. run apt update/upgrade
  2. Install tor, I did this by:
apt-get install -o Dpkg::Options::="--force-confold" -y tor

I have this small script deployed on any of my based systems, it just does all the update, upgrade, dist-upgrade, autoremove and autoclean in one run.

#!/bin/sh 

if [ $# -eq 0 ]; then
  sudo sh -c "apt-get update && apt-get upgrade && apt-get dist-upgrade && apt-get update && apt-get autoremove && apt-get autoclean"
else
  sudo sh -c "apt-get update && apt-get upgrade && apt-get dist-upgrade && apt-get update && apt-get install $@ && apt-get autoremove && apt-get autoclean"
fi

I have this script deployed in a lazy manner, I just have it sitting in my users home folder and called it „up“, I did do a „chmod +x up“ and just start it like this:

~/up

It also accepts one several package names as an arguments and that be called like this:

sudo ~/up package1,package2

This will then install „package1“ and „package2“.

I am not sure where I found this, but I surely did find this somewhere in the internet and just took it from there, you thanks to who ever put this together.