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'\" t
.TH "SYSTEMD\-UPDATE\-DONE\&.SERVICE" "8" "" "systemd 220" "systemd-update-done.service"
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.\" http://bugs.debian.org/507673
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.nh
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.SH "NAME"
systemd-update-done.service, systemd-update-done \- Mark /etc and /var fully updated
.SH "SYNOPSIS"
.PP
systemd\-update\-done\&.service
.PP
/usr/lib/systemd/systemd\-update\-done
.SH "DESCRIPTION"
.PP
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 requires updates to
/etc
or
/var
on the following boot\&.
.PP
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\&.
.PP
Services that shall run after offline upgrades of
/usr
should order themselves before
systemd\-update\-done\&.service, and use the
\fIConditionNeedsUpdate=\fR
(see
\fBsystemd.unit\fR(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
\fBtouch\fR(1)
on it\&.
.SH "SEE ALSO"
.PP
\fBsystemd\fR(1),
\fBsystemd.unit\fR(5),
\fBtouch\fR(1)
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