unattended-upgrade(8) System Manager's Manual unattended-upgrade(8)
NAME
unattended-upgrade - automatic installation of security (and other) up-
grades
SYNOPSIS
unattended-upgrade [options]
DESCRIPTION
This program can download and install security upgrades automatically
and unattended, taking care to only install packages from the config-
ured APT source, and checking for dpkg prompts about configuration file
changes. All operations are logged to /var/log/unattended-upgrades/un-
attended-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 de-
fault configuration file can be found at /etc/apt/apt.conf.d/50unat-
tended-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)
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