Jtdylktuy

I'm trying to provision a machine using Vagrant and plain bash scripts.

The two lines are:

DEBIAN_FRONTEND=noninteractive apt-get update

DEBIAN_FRONTEND=noninteractive apt-get upgrade -yq

However, it doesn't work as expected:

default: Configuration file '/etc/update-manager/release-upgrades'

default:  ==> Modified (by you or by a script) since installation.

default:  ==> Package distributor has shipped an updated version.

default:    What would you like to do about it ?  Your options are:

default:     Y or I  : install the package maintainer's version

default:     N or O  : keep your currently-installed version

default:       D     : show the differences between the versions

default:       Z     : start a shell to examine the situation

default:  The default action is to keep your current version.

default: 

default: *** release-upgrades (Y/I/N/O/D/Z) [default=N] ? dpkg: error processing package ubuntu-release-upgrader-core (--configure):

default: 

default:  end of file on stdin at conffile prompt

Is there any other option I could use to provide a Y answer to that?

< Apt 1.1

Try the following command to force upgrade for non-interactive sessions:

DEBIAN_FRONTEND=noninteractive 

        apt-get 

                -o Dpkg::Options::="--force-confnew" 

                --force-yes 

                -fuy 

                dist-upgrade

^{Note: Use --force-confold to keep old, and --force-confnew to keep new configs.}

Source: apt-get -y upgrade for non-interactive sessions - and replacing conf files in /etc.

>= Apt 1.1

If you're using Apt 1.1 or above, --force-yes has been deprecated, so you've to use the options starting with --allow instead, e.g. --allow-downgrades, --allow-remove-essential, --allow-change-held-packages.

So the command is:

DEBIAN_FRONTEND=noninteractive 

  apt-get 

  -o Dpkg::Options::=--force-confold 

  -o Dpkg::Options::=--force-confdef 

  -y --allow-downgrades --allow-remove-essential --allow-change-held-packages

Source: CFE-2360: Make apt_get package module version aware.

Related:

• 100% non-interactive Debian dist-upgrade


• apt-get update non interactive


• How do I ask apt-get to skip any interactive post-install configuration steps?