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 November 14, 2017 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 kru 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 r 54Print the version and patch level of the running kernel. 55Unlike 56.Xr uname 1 , 57this is unaffected by environment variables. 58.It Fl u 59Print the version and patch level of the installed userland. 60These are hardcoded into 61.Nm 62during the build. 63.El 64.Pp 65If several of the above options are specified, 66.Nm 67will print the installed kernel version first, then the running kernel 68version, and finally the userland version, on separate lines. 69If neither is specified, it will print the userland version only. 70.Sh IMPLEMENTATION NOTES 71The 72.Nm 73utility should provide the correct answer in the vast majority of 74cases, including on systems kept up-to-date using 75.Xr freebsd-update 8 , 76which does not update the kernel version unless the kernel itself was 77affected by the latest patch. 78.Pp 79To determine the name (and hence the location) of a custom kernel, the 80.Nm 81utility will attempt to parse 82.Pa /boot/defaults/loader.conf 83and 84.Pa /boot/loader.conf , 85looking for definitions of the 86.Va kernel 87and 88.Va bootfile 89variables, both with a default value of 90.Dq kernel . 91It may however fail to locate the correct kernel if either or both of 92these variables are defined in a non-standard location, such as in 93.Pa /boot/loader.rc . 94.Sh ENVIRONMENT 95.Bl -tag -width ROOT 96.It Ev ROOT 97Path to the root of the filesystem in which to look for 98.Pa loader.conf 99and the kernel. 100.El 101.Sh EXAMPLES 102To determine the version of the currently running userland: 103.Bd -literal -offset indent 104/bin/freebsd-version -u 105.Ed 106.Pp 107To inspect a system being repaired using a live CD: 108.Bd -literal -offset indent 109mount -rt ufs /dev/ada0p2 /mnt 110env ROOT=/mnt /mnt/bin/freebsd-version -ku 111.Ed 112.Sh SEE ALSO 113.Xr uname 1 , 114.Xr loader.conf 5 115.Sh HISTORY 116The 117.Nm 118command appeared in 119.Fx 10.0 . 120.Sh AUTHORS 121The 122.Nm 123utility and this manual page were written by 124.An Dag-Erling Sm\(/orgrav Aq Mt des@FreeBSD.org . 125