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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 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