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$FreeBSD: stable/10/bin/freebsd-version/freebsd-version.1 307403 2016-10-16 22:02:50Z sevan $
.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.
p The following options are available: l -tag -width Fl t 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. t Fl u Print the version and patch level of the installed userland. These are hardcoded into .Nm during the build. .El
p 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.
p To determine the name (and hence the location) of a custom kernel, the .Nm utility will attempt to parse
a /boot/defaults/loader.conf and
a /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
a /boot/loader.rc . .Sh ENVIRONMENT l -tag -width ROOT t Ev ROOT Path to the root of the filesystem in which to look for
a loader.conf and the kernel. .El .Sh EXAMPLES To determine the version of the currently running userland: d -literal -offset indent /bin/freebsd-version -u .Ed
p To inspect a system being repaired using a live CD: d -literal -offset indent mount -rt ufs /dev/ada0p2 /mnt env ROOT=/mnt /mnt/bin/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 Mt des@FreeBSD.org .