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Manual: unattended-upgrade

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unattended-upgrade(8)				   System Manager's Manual			       unattended-upgrade(8)

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  opera‐
       tions  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 

       This manual page was originally written by Michael Vogt 

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)
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