1.\"- 2.\" Copyright (c) 2013 Dag-Erling Smørgrav 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" 26.\" $FreeBSD$ 27.\" 28.Dd October 5, 2013 29.Dt FREEBSD-VERSION 1 30.Os 31.Sh NAME 32.Nm freebsd-version 33.Nd print the version and patch level of the installed system 34.Sh SYNOPSIS 35.Nm 36.Op Fl ku 37.Sh DESCRIPTION 38The 39.Nm 40utility makes a best effort to determine the version and patch level 41of the installed kernel and / or userland. 42.Pp 43The following options are available: 44.Bl -tag -width Fl 45.It Fl k 46Print the version and patch level of the installed kernel. 47Unlike 48.Xr uname 1 , 49if a new kernel has been installed but the system has not yet 50rebooted, 51.Nm 52will print the version and patch level of the new kernel. 53.It Fl u 54Print the version and patch level of the installed userland. 55These are hardcoded into 56.Nm 57during the build. 58.El 59.Pp 60If both 61.Fl k 62and 63.Fl u 64are specified, 65.Nm 66will print the kernel version first, then the userland version, on 67separate lines. 68If neither is specified, it will print the userland version only. 69.Sh IMPLEMENTATION NOTES 70The 71.Nm 72utility should provide the correct answer in the vast majority of 73cases, including on systems kept up-to-date using 74.Xr freebsd-update 8 , 75which does not update the kernel version unless the kernel itself was 76affected by the latest patch. 77.Pp 78To determine the name (and hence the location) of a custom kernel, the 79.Nm 80utility will attempt to parse 81.Pa /boot/defaults/loader.conf 82and 83.Pa /boot/loader.conf , 84looking for definitions of the 85.Va kernel 86and 87.Va bootfile 88variables, both with a default value of 89.Dq kernel . 90It may however fail to locate the correct kernel if either or both of 91these variables are defined in a non-standard location, such as in 92.Pa /boot/loader.rc . 93.Sh ENVIRONMENT 94.Bl -tag -width ROOT 95.It Ev ROOT 96Path to the root of the filesystem in which to look for 97.Pa loader.conf 98and the kernel. 99.El 100.Sh EXAMPLES 101To determine the version of the currently running userland: 102.Bd -literal -offset indent 103/bin/freebsd-version -u 104.Ed 105.Pp 106To inspect a system being repaired using a live CD: 107.Bd -literal -offset indent 108mount -rt ufs /dev/ada0p2 /mnt 109env ROOT=/mnt /mnt/bin/freebsd-version -ku 110.Ed 111.Sh SEE ALSO 112.Xr uname 1 , 113.Xr loader.conf 5 114.Sh HISTORY 115The 116.Nm 117command appeared in 118.Fx 10.0 . 119.Sh AUTHORS 120The 121.Nm 122utility and this manual page were written by 123.An Dag-Erling Sm\(/orgrav Aq Mt des@FreeBSD.org . 124