FreeBSD non-interactive portmaster (http://bsdjlh.blogspot.com/2012/03/portmaster-options-combo-to-upgrade.html) portmaster -dBGm BATCH=1 --no-confirm --delete-packages -a Ubuntu / Debian apt non-interactive sudo DEBIAN_FRONTEND=noninteractive apt-get -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" install wget curl vim-nox Misc commands to fix VirtualBox guest additions 4.3.10 with Linux guests Host: $ VBoxManage guestproperty get UBUNTU-DOCKER-1 /VirtualBox/GuestAdd/Version Value: 4.2.0 $ VBoxManage guestproperty set UBUNTU-DOCKER-1 /VirtualBox/GuestAdd/Version 4.3.10 Guest: sudo ln -s /opt/VBoxGuestAdditions-4.3.10/lib/VBoxGuestAdditions /usr/lib/VBoxGuestAdditions