fix continuation

 1. Pre-upgrade backups and preperation:

        : reset to the default locale

        export LANG=C.UTF-8

        export LANG=C.UTF-8 &&

        : note that screen call does not really work this way &&

        sudo apt install ttyrec screen debconf-utils apt-show-versions deborphan &&

        # note: that screen call does not really work this way

        sudo ttyrec -e screen /var/log/upgrade-buster.ttyrec &&

        ( umask 0077 &&

          tar cfz /var/backups/pre-buster-backup.tgz /etc /var/lib/dpkg /var/lib/apt/extended_states /var/cache/debconf &&