sudo adduser --force-badname --system --home /nonexistent --no-create-home --quiet _apt || true sudo chown _apt /var/lib/update-notifier/package-data-downloads/partial/
sudo adduser --force-badname --system --home /nonexistent --no-create-home --quiet _apt || true update- notifier/ package- data-downloads/ partial/
sudo chown _apt /var/lib/