# man > systemd-update-done.service(8)

[_SYSTEMD-UPDATE-DONE.SERVICE_(8)](https://www.chedong.com/phpMan.php/man/SYSTEMD-UPDATE-DONE.SERVICE/8/markdown)       systemd-update-done.service      [_SYSTEMD-UPDATE-DONE.SERVICE_(8)](https://www.chedong.com/phpMan.php/man/SYSTEMD-UPDATE-DONE.SERVICE/8/markdown)

## NAME
       systemd-update-done.service, systemd-update-done - Mark /etc/ and /var/ fully updated

## SYNOPSIS
       systemd-update-done.service

       /usr/lib/systemd/systemd-update-done

## DESCRIPTION
       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) of the stamp files
       /etc/.updated and /var/.updated to the modification time of the /usr/ directory, unless the
       stamp files are already newer.

       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)](https://www.chedong.com/phpMan.php/man/systemd.unit/5/markdown))
       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)](https://www.chedong.com/phpMan.php/man/touch/1/markdown) 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.

## SEE ALSO
       [**systemd**(1)](https://www.chedong.com/phpMan.php/man/systemd/1/markdown), [**systemd.unit**(5)](https://www.chedong.com/phpMan.php/man/systemd.unit/5/markdown), [**touch**(1)](https://www.chedong.com/phpMan.php/man/touch/1/markdown)

systemd 255                                                           [_SYSTEMD-UPDATE-DONE.SERVICE_(8)](https://www.chedong.com/phpMan.php/man/SYSTEMD-UPDATE-DONE.SERVICE/8/markdown)