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)