4 Oct 2019
apt update -y && apt upgrade -y && apt full-upgrade -y && apt --purge autoremove -y && cp -v /etc/apt/sources.list /root/ && cp -rv /etc/apt/sources.list.d/ /root/ && sed -i 's/stretch/buster/g' /etc/apt/sources.list && sed -i 's/stretch/buster/g' /etc/apt/sources.list.d/* && apt update -y && apt upgrade -y && apt full-upgrade -y && apt --purge autoremove -y && reboot
https://www.cyberciti.biz/faq/update-upgrade-debian-9-to-debian-10-bust…