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offline system update with pacman

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pacman-offline
==============

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**Run offline system update with pacman.**

The offline system update with pacman is achieved by integrating into
[offline updates in systemd ↗️](https://www.freedesktop.org/software/systemd/man/systemd.offline-updates.html).
In fact only two scripts and a number of systemd unit files are used to
glue `systemd` and `pacman`.

*Use at your own risk*, pay attention to
[license and warranty](#license-and-warranty), and
[disclaimer on external links](#disclaimer-on-external-links)!

Requirements
------------

There are the runtime dependencies:

* [pacman ↗️](https://archlinux.org/pacman/)
* [systemd ↗️](https://www.github.com/systemd/systemd)

And there's an optional dependency to support elevating privileges:

* [polkit ↗️](https://github.com/polkit-org/polkit)

Optional basic support for
[plymouth ↗️](https://www.freedesktop.org/wiki/Software/Plymouth/) is
integrated.

Usage
-----

A single command `pacman-offline` is used to prepare the offline update.
It accepts some arguments:

* *-a*: abort pending system-update
* *-c*: clean before download
* *-f*: force if other system-update is pending
* *-h*: show help
* *-p*: reboot, install and poweroff immediately
* *-r*: reboot and install immediately
* *-t*: start timer for nightly reboot
* *-y*: update sync databases

### Elevating privileges

The privileges are elevated automatically if `polkit` is installed. This works
with no authentication if your user is member of the group `wheel`. To add your
user to that group run:

usermod --append --groups wheel user

If your user is not member of that group you will be asked for a password.

### Timer for preparation

You can enable a timer to prepare the offline update automatically.

systemctl enable pacman-offline-prepare.timer

This will trigger several minutes after boot, then ever day. The databases
are synced, then packages are downloaded. The updates are installed when
ever the system reboots.

Alternatively use a timer that includes to clean the cache:

systemctl enable pacman-offline-clean-prepare.timer

### Timer for nightly reboot

You can enable a timer for nightly reboot:

systemctl enable pacman-offline-reboot.timer

This will trigger at night, if updates are pending and prepared.

### Desktop environment

A *desktop file* is installed to allow preparing from a desktop
environment. Have a look at your application menu...

Configuration
-------------

Two snippets for inclusion in `/etc/pacman.conf` are shipped. To make use of
them add these line:

Include = /etc/pacman.d/offline.conf
    #Include = /etc/pacman.d/offline-include.conf

The first one will cause `pacman` to ignore linux packages and prevent
breaking module loading and hibernation. These packages are not ignored
on offline update.

The second one has the opposite effect, it is included on offline action
only.

Modify `/etc/pacman.d/offline.conf` and `/etc/pacman.d/offline-include.conf`
to your needs by changing or adding packages, or adding new directives.

License and warranty
--------------------

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
[GNU General Public License](COPYING.md) for more details.

Disclaimer on external links
----------------------------

Our website contains links to the websites of third parties ("external
links"). As the content of these websites is not under our control, we
cannot assume any liability for such external content. In all cases, the
provider of information of the linked websites is liable for the content
and accuracy of the information provided. At the point in time when the
links were placed, no infringements of the law were recognisable to us.
As soon as an infringement of the law becomes known to us, we will
immediately remove the link in question.

> 💡️ **Hint**: All external links are marked with an arrow pointing
> diagonally in an up-right (or north-east) direction (↗️).

### Upstream

URL:
[GitHub.com](https://github.com/eworm-de/pacman-offline#pacman-offline)

Mirror:
[eworm.de](https://git.eworm.de/cgit.cgi/pacman-offline/)
[GitLab.com](https://gitlab.com/eworm-de/pacman-offline#pacman-offline)

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