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.\"	$OpenBSD: sysupgrade.8,v 1.16 2024/09/25 13:55:23 sthen Exp $
.\"
.\" Copyright (c) 2019 Florian Obser <florian@openbsd.org>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd $Mdocdate: September 25 2024 $
.Dt SYSUPGRADE 8
.Os
.Sh NAME
.Nm sysupgrade
.Nd upgrade system to the next release or a new snapshot
.Sh SYNOPSIS
.Nm
.Op Fl fkns
.Op Fl b Ar base-directory
.Op Fl R Ar version
.Op Ar installurl
.Sh DESCRIPTION
.Nm
is a utility to upgrade
.Ox
to a new release or snapshot if available.
.Pp
.Nm
downloads the necessary files to
.Pa /home/_sysupgrade ,
verifies them with
.Xr signify 1 ,
and copies bsd.rd to
.Pa /bsd.upgrade .
.Pp
.Nm
by default then reboots the system.
The bootloader will automatically choose
.Pa /bsd.upgrade ,
triggering a one-shot upgrade using the files in
.Pa /home/_sysupgrade .
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl b Ar base-directory
Download files to
.Ar base-directory Ns / Ns Pa _sysupgrade
instead of
.Pa /home/_sysupgrade .
.It Fl f
Force an already applied upgrade.
The default is to upgrade to latest snapshot only if available.
This option has no effect on releases.
.It Fl k
Keep the files in
.Pa /home/_sysupgrade .
By default they will be deleted after the upgrade.
.It Fl n
Fetch and verify the files and create
.Pa /bsd.upgrade
but do not reboot.
.It Fl R Op version
Upgrade to a specific release version.
Only upgrades from one version to the next are tested.
Skipping versions may work.
Downgrading is unlikely to work.
.It Fl s
Upgrade to a snapshot.
The default is to upgrade to the next release.
.El
.Pp
See
.Xr upgrade.site 5
for how to customize the upgrade process.
.Sh FILES
.Bl -tag -width "/auto_upgrade.conf" -compact
.It Pa /auto_upgrade.conf
Response file for the ramdisk kernel.
.It Pa /bsd.upgrade
The ramdisk kernel to trigger an unattended upgrade.
.It Pa /etc/installurl
.Ox
mirror top-level URL for fetching an upgrade.
.It Pa /home/_sysupgrade
Directory the upgrade is downloaded to.
.El
.Sh SEE ALSO
.Xr signify 1 ,
.Xr installurl 5 ,
.Xr upgrade.site 5 ,
.Xr autoinstall 8 ,
.Xr release 8 ,
.Xr sysmerge 8
.Sh HISTORY
.Nm
first appeared in
.Ox 6.6 .