NAME

       unattended-upgrade - automatic installation of security (and other) upgrades

SYNOPSIS

       unattended-upgrade [options]

DESCRIPTION

       This  program  can  download  and  install security upgrades automatically and unattended,
       taking care to only install packages from the configured APT source, and checking for dpkg
       prompts    about    configuration   file   changes.   All   operations   are   logged   to
       /var/log/unattended-upgrades/unattended-upgrades.log and the package manager (dpkg) output
       is logged to /var/log/unattended-upgrades/unattended-upgrades-dpkg.log

       This  script  is the backend for the APT::Periodic::Unattended-Upgrade option and designed
       to be run periodically by APT's systemd service (apt-daily-upgrade.service) or  from  cron
       (e.g. via /etc/cron.daily/apt).

OPTIONS

       unattended-upgrade accepts the following options:

       -h, --help
              help output

       -d, --debug
              extra debug output into /var/log/unattended-upgrades/unattended-upgrades.log

       --apt-debug
              detailed APT/LibAPT output for debugging

       -v, --verbose
              show verbose output

       --dry-run
              Just simulate installing updates, do not actually do it

       --minimal-upgrade-steps
              perform upgrade in minimal steps (cancel with SIGINT). This is the default now.

       --no-minimal-upgrade-steps
              do not perform upgrade in minimal steps

CONFIGURATION

       The  configuration  is done via the apt configuration mechanism. The default configuration
       file can be found at /etc/apt/apt.conf.d/50unattended-upgrades

AUTHORS

       unattended-upgrade is written by Michael Vogt <mvo@ubuntu.com>

       This manual page was originally written by Michael Vogt <mvo@ubuntu.com>

COPYRIGHT

       Copyright  (C)  2005-2009 Canonical

       There is NO warranty.  You may redistribute this software under the  terms  of   the   GNU
       General   Public  License.   For more information about these matters, see the files named
       COPYING.

                                          March 1, 2019                     unattended-upgrade(8)