2 .\" Copyright (c) 2013 Dag-Erling Smørgrav
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31 .Nd print the version and patch level of the installed system
39 utility makes a best effort to determine the version and patch level
40 of the installed kernel and / or userland.
42 The following options are available:
45 Print the version and patch level of the installed kernel.
48 if a new kernel has been installed but the system has not yet
51 will print the version and patch level of the new kernel.
53 Print the version and patch level of the running kernel.
56 this is unaffected by environment variables.
58 Print the version and patch level of the installed userland.
59 These are hardcoded into
63 Print the version and patch level of the installed userland in the
64 given jail specified by
68 This option can be specified multiple times.
71 If several of the above options are specified,
73 will print the installed kernel version first, then the running kernel
74 version, next the userland version, and finally the userland version
75 of the specified jails, on separate lines.
76 If neither is specified, it will print the userland version only.
77 .Sh IMPLEMENTATION NOTES
80 utility should provide the correct answer in the vast majority of
81 cases, including on systems kept up-to-date using
82 .Xr freebsd-update 8 ,
83 which does not update the kernel version unless the kernel itself was
84 affected by the latest patch.
86 To determine the name (and hence the location) of a custom kernel, the
88 utility will attempt to parse
89 .Pa /boot/defaults/loader.conf
91 .Pa /boot/loader.conf ,
92 looking for definitions of the
96 variables, both with a default value of
98 It may however fail to locate the correct kernel if either or both of
99 these variables are defined in a non-standard location, such as in
100 .Pa /boot/loader.rc .
104 Path to the root of the filesystem in which to look for
109 To determine the version of the currently running userland:
110 .Bd -literal -offset indent
111 /bin/freebsd-version -u
114 To inspect a system being repaired using a live CD:
115 .Bd -literal -offset indent
116 mount -rt ufs /dev/ada0p2 /mnt
117 env ROOT=/mnt /mnt/bin/freebsd-version -ku
130 utility and this manual page were written by
131 .An Dag-Erling Sm\(/orgrav Aq Mt des@FreeBSD.org .