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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SEE ALSO | COLOPHON |
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SYSTEMD-....SERVICE(8) systemd-update-done.service SYSTEMD-....SERVICE(8)
systemd-update-done.service, systemd-update-done - Mark /etc/ and
/var/ as fully updated
systemd-update-done.service
/usr/lib/systemd/systemd-update-done
systemd-update-done.service is a service that is invoked as part
of the first boot after the vendor operating system resources in
/usr/ have been updated. This is useful to implement offline
updates of /usr/ which might require updates to /etc/ or /var/ on
the following boot.
systemd-update-done.service updates the file modification time
(mtime) stored in and "on" the files /etc/.updated and
/var/.updated to the modification time of the /usr/ directory,
unless the stamp files are already newer. (The timestamp is stored
as the mtime field on the file, but also in the file to support
filesystems that do not store full timestamp precision.)
Services that shall run after offline upgrades of /usr/ should
order themselves before systemd-update-done.service, and use the
ConditionNeedsUpdate= (see systemd.unit(5)) condition to make sure
to run when /etc/ or /var/ are older than /usr/ according to the
modification times of the files described above. This requires
that updates to /usr/ are always followed by an update of the
modification time of /usr/, for example by invoking touch(1) on
it.
Note that if the systemd.condition_needs_update= kernel command
line option is used it overrides the ConditionNeedsUpdate= unit
condition checks. In that case systemd-update-done.service will
not reset the condition state until a follow-up reboot where the
kernel switch is not specified anymore.
The following options are understood:
--root=root
Takes a directory path as an argument. The program will
operate on paths below the specified root directory.
Added in version 258.
-h, --help
Print a short help text and exit.
systemd(1), systemd.unit(5), touch(1)
This page is part of the systemd (systemd system and service
manager) project. Information about the project can be found at
⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have a
bug report for this manual page, see
⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.
This page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2025-08-11. (At that
time, the date of the most recent commit that was found in the
repository was 2025-08-11.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
[email protected]
systemd 258~rc2 SYSTEMD-....SERVICE(8)
Pages that refer to this page: systemd.unit(5), systemd.directives(7), systemd.index(7)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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