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-.\"-
-.\" Copyright (c) 2013 Dag-Erling Smørgrav
-.\" All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\" notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice, this list of conditions and the following disclaimer in the
-.\" documentation and/or other materials provided with the distribution.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\" $FreeBSD$
-.\"
-.Dd October 5, 2013
-.Dt FREEBSD-VERSION 1
-.Os
-.Sh NAME
-.Nm freebsd-version
-.Nd print the version and patch level of the installed system
-.Sh SYNOPSIS
-.Nm
-.Op Fl ku
-.Sh DESCRIPTION
-The
-.Nm
-utility makes a best effort to determine the version and patch level
-of the installed kernel and / or userland.
-.Pp
-The following options are available:
-.Bl -tag -width Fl
-.It Fl k
-Print the version and patch level of the installed kernel.
-Unlike
-.Xr uname 1 ,
-if a new kernel has been installed but the system has not yet
-rebooted,
-.Nm
-will print the version and patch level of the new kernel.
-.It Fl u
-Print the version and patch level of the installed userland.
-These are hardcoded into
-.Nm
-during the build.
-.El
-.Pp
-If both
-.Fl k
-and
-.Fl u
-are specified,
-.Nm
-will print the kernel version first, then the userland version, on
-separate lines.
-If neither is specified, it will print the userland version only.
-.Sh IMPLEMENTATION NOTES
-The
-.Nm
-utility should provide the correct answer in the vast majority of
-cases, including on systems kept up-to-date using
-.Xr freebsd-update 8 ,
-which does not update the kernel version unless the kernel itself was
-affected by the latest patch.
-.Pp
-To determine the name (and hence the location) of a custom kernel, the
-.Nm
-utility will attempt to parse
-.Pa /boot/defaults/loader.conf
-and
-.Pa /boot/loader.conf ,
-looking for definitions of the
-.Va kernel
-and
-.Va bootfile
-variables, both with a default value of
-.Dq kernel .
-It may however fail to locate the correct kernel if either or both of
-these variables are defined in a non-standard location, such as in
-.Pa /boot/loader.rc .
-.Sh ENVIRONMENT
-.Bl -tag -width ROOT
-.It Ev ROOT
-Path to the root of the filesystem in which to look for
-.Pa loader.conf
-and the kernel.
-.El
-.Sh EXAMPLES
-To determine the version of the currently running userland:
-.Bd -literal -offset indent
-/libexec/freebsd-version -u
-.Ed
-.Pp
-To inspect a system being repaired using a live CD:
-.Bd -literal -offset indent
-mount -rt ufs /dev/ada0p2 /mnt
-env ROOT=/mnt /mnt/libexec/freebsd-version -ku
-.Ed
-.Sh SEE ALSO
-.Xr uname 1 ,
-.Xr loader.conf 5 ,
-.Xr freebsd-version 8
-.Sh HISTORY
-The
-.Nm
-command appeared in
-.Fx 10.0 .
-.Sh AUTHORS
-The
-.Nm
-utility and this manual page were written by
-.An Dag-Erling Sm\(/orgrav Aq des@FreeBSD.org .
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