mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
98 lines
2.8 KiB
Groff
98 lines
2.8 KiB
Groff
.\"-
|
|
.\" Copyright (c) 2000 Peter Wemm <peter@FreeBSD.org>
|
|
.\"
|
|
.\" 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 AUTHORS 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 AUTHORS 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.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd January 13, 2009
|
|
.Dt KENV 1
|
|
.Os
|
|
.Sh NAME
|
|
.Nm kenv
|
|
.Nd dump or modify the kernel environment
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl hq
|
|
.Nm
|
|
.Op Fl q
|
|
.Ar variable Ns Op = Ns Ar value
|
|
.Nm
|
|
.Op Fl q
|
|
.Fl u
|
|
.Ar variable
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
utility will dump the kernel environment if
|
|
invoked without arguments.
|
|
If the
|
|
.Fl h
|
|
option is specified, it will limit the report to kernel probe hints.
|
|
If an optional
|
|
.Ar variable
|
|
name is specified,
|
|
.Nm
|
|
will only report that value.
|
|
If the
|
|
.Fl u
|
|
option is specified,
|
|
.Nm
|
|
will delete the given environment variable.
|
|
If the environment variable is followed by an optional
|
|
.Ar value ,
|
|
.Nm
|
|
will set the environment variable to this value.
|
|
.Pp
|
|
If the
|
|
.Fl q
|
|
option is set, warnings normally printed as a result of being unable to
|
|
perform the requested operation will be suppressed.
|
|
.Pp
|
|
Variables can be added to the kernel environment using the
|
|
.Xr /boot/loader.conf
|
|
file, or also statically compiled into the kernel using the statement
|
|
.Pp
|
|
.Dl Ic env Ar filename
|
|
.Pp
|
|
in the kernel config file.
|
|
The file can contain lines of the form
|
|
.Pp
|
|
.Dl name = "value" # this is a comment
|
|
.Pp
|
|
where whitespace around name and '=', and
|
|
everything after a '#' character, are ignored. Almost any printable
|
|
character except '=' is acceptable as part of a name. Quotes
|
|
are optional and necessary only if the value contains
|
|
whitespace.
|
|
.Pp
|
|
.Sh SEE ALSO
|
|
.Xr kenv 2 ,
|
|
.Xr config 5 ,
|
|
.Xr loader.conf 5 ,
|
|
.Xr loader 8
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
utility appeared in
|
|
.Fx 4.1.1 .
|