-export DEBIAN_FRONTEND=noninteractive
-sudo apt-get dist-upgrade -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold"
-test_or_die "problem while doing 'apt-get dist-upgrade'"
+sudo bash -c "\
+ export DEBIAN_FRONTEND=noninteractive; \
+ apt dist-upgrade -y -o Dpkg::Options::=\"--force-confdef\" \
+ -o Dpkg::Options::=\"--force-confold\"; \
+"
+exit_on_error "problem while doing 'apt dist-upgrade'"