upgrade.sh

#!/usr/bin/env bash

export DEBIAN_FRONTEND=noninteractive
export UCF_FORCE_CONFFNEW=1
export APT="DEBIAN_FRONTEND=noninteractive apt-get -y -q -o Dpkg::Options::=--force-confnew"

sudo $APT purge unattended-upgrades
sudo $APT update
sudo $APT install apt-utils
sudo $APT dist-upgrade

exit 0