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.Dd October 1, 2021 27.Dt FREEBSD-VERSION 1 28.Os 29.Sh NAME 30.Nm freebsd-version 31.Nd print the version and patch level of the installed system 32.Sh SYNOPSIS 33.Nm 34.Op Fl kru 35.Op Fl j Ar jail 36.Sh DESCRIPTION 37The 38.Nm 39utility makes a best effort to determine the version and patch level 40of the installed kernel and / or userland. 41.Pp 42The following options are available: 43.Bl -tag -width Fl 44.It Fl k 45Print the version and patch level of the installed kernel. 46Unlike 47.Xr uname 1 , 48if a new kernel has been installed but the system has not yet 49rebooted, 50.Nm 51will print the version and patch level of the new kernel. 52.It Fl r 53Print the version and patch level of the running kernel. 54Unlike 55.Xr uname 1 , 56this is unaffected by environment variables. 57.It Fl u 58Print the version and patch level of the installed userland. 59These are hardcoded into 60.Nm 61during the build. 62.It Fl j Ar jail 63Print the version and patch level of the installed userland in the 64given jail specified by 65.Va jid 66or 67.Va name . 68This option can be specified multiple times. 69.El 70.Pp 71If several of the above options are specified, 72.Nm 73will print the installed kernel version first, then the running kernel 74version, next the userland version, and finally the userland version 75of the specified jails, on separate lines. 76If neither is specified, it will print the userland version only. 77.Sh IMPLEMENTATION NOTES 78The 79.Nm 80utility should provide the correct answer in the vast majority of 81cases, including on systems kept up-to-date using 82.Xr freebsd-update 8 , 83which does not update the kernel version unless the kernel itself was 84affected by the latest patch. 85.Pp 86To determine the name (and hence the location) of a custom kernel, the 87.Nm 88utility will attempt to parse 89.Pa /boot/defaults/loader.conf 90and 91.Pa /boot/loader.conf , 92looking for definitions of the 93.Va kernel 94and 95.Va bootfile 96variables, both with a default value of 97.Dq kernel . 98It may however fail to locate the correct kernel if either or both of 99these variables are defined in a non-standard location, such as in 100.Pa /boot/loader.rc . 101.Sh ENVIRONMENT 102.Bl -tag -width ROOT 103.It Ev ROOT 104Path to the root of the filesystem in which to look for 105.Pa loader.conf 106and the kernel. 107.El 108.Sh EXAMPLES 109To determine the version of the currently running userland: 110.Bd -literal -offset indent 111/bin/freebsd-version -u 112.Ed 113.Pp 114To inspect a system being repaired using a live CD: 115.Bd -literal -offset indent 116mount -rt ufs /dev/ada0p2 /mnt 117env ROOT=/mnt /mnt/bin/freebsd-version -ku 118.Ed 119.Sh SEE ALSO 120.Xr uname 1 , 121.Xr loader.conf 5 122.Sh HISTORY 123The 124.Nm 125command appeared in 126.Fx 10.0 . 127.Sh AUTHORS 128The 129.Nm 130utility and this manual page were written by 131.An Dag-Erling Sm\(/orgrav Aq Mt des@FreeBSD.org . 132