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.\" Copyright (c) 2011-2013 Devin Teske
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.Dd Apr 22, 2017
.Dt VERSION.4TH 5
.Os
.Sh NAME
.Nm version.4th
.Nd loader version string boot module
.Sh DESCRIPTION
The file that goes by the name of
.Nm
is a set of commands designed to draw the boot loader
version at the bottom-right of the screen.
The commands of
.Nm
by themselves are not enough for most uses.
Please refer to the
examples below for the most common situations, and to
.Xr loader 5
for additional commands.
.Pp
Before using any of the commands provided in
.Nm ,
it must be included
through the command:
.Pp
.Dl include version.4th
.Pp
This line is present in the default
.Pa /boot/forth/menu.rc
file, so it is not needed (and should not be re-issued) in a normal setup.
.Pp
The commands provided by it are:
.Pp
.Bl -tag -width disable-module_module -compact -offset indent
.It Ic print_version
Prints the contents of the
.Va loader_version
environment variable right-justified at the column
.Va loader_version_x
and row
.Va loader_version_y .
.El
.Pp
The environment variables that effect its behavior are:
.Bl -tag -width bootfile -offset indent
.It Va loader_version
Set automatically by
.Xr loader 5 ,
but you can override it by setting in
.Xr loader.conf 4 .
This should be the version of boot loader used.
.It Va loader_version_x
Sets the desired ending column position of
.Va loader_version .
Default is 80.
.It Va loader_version_y
Sets the desired ending row position of
.Va loader_version .
Default is 24.
.It Va loader_color
If set to
.Dq Li NO
(case-insensitive) or
.Dq Li 0 ,
causes the version to be printed without color
.Pq default is ANSI Cyan .
.El
.Sh FILES
.Bl -tag -width /boot/version.4th -compact
.It Pa /boot/zfsloader
The
.Xr zfsloader 5 .
.It Pa /boot/forth/version.4th
.Nm
itself.
.It Pa /boot/loader.rc
.Xr loader 5
bootstrapping script.
.El
.Sh EXAMPLES
Override
.Xr loader 5
version in
.Xr loader.conf 4 :
.Pp
.Bd -literal -offset indent -compact
loader_version="loader 1.1"
.Ed
.Sh SEE ALSO
.Xr loader.conf 4 ,
.Xr color.4th 5 ,
.Xr loader 5
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