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Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/
76 lines
2.7 KiB
Groff
76 lines
2.7 KiB
Groff
.\"
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.\" SPDX-License-Identifier: BSD-2-Clause
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.\"
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.\" Copyright (c) 2020 Kyle Evans <kevans@FreeBSD.org>
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.Dd May 10, 2023
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.Dt LOADER.CONF.LUA 5
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.Os
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.Sh NAME
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.Nm loader.conf.lua
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.Nd Lua-based system bootstrap configuration file
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.Sh DESCRIPTION
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When the lua-based
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.Xr loader 8
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encounters a filename in
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.Va loader_conf_files
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that has a
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.Dq .lua
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suffix, it will be loaded and executed by the lua interpreter in a limited
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environment.
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.Pp
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The limited environment does not contain the ability to reference or load other
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lua modules.
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Existing loader environment variables may be referenced as if they were already
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defined global variables.
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.Pp
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A lua configuration file may set any global variable, which will subsequently
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be processed and added to the environment after execution of the configuration
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file has completed.
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Other than the
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.Ar exec
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setting, all variables described in
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.Xr loader.conf 5
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operate the same in the
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.Nm
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environment.
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Note that the settings describing module options can only be set in the
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environment; there is currently no way for a
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.Pa loader.conf.lua
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to fetch them.
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At this time, global table and function values are ignored.
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.Pp
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The
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.Fn config.buildenv
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hook will be run with an empty environment provided to it that may be populated
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by a custom
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.Pa local.lua .
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.Sh SEE ALSO
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.Xr loader.conf 5
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.Sh AUTHORS
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The mechanism for loading
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.Nm
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files was originally written by
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.An Kyle Evans Aq Mt kevans@FreeBSD.org .
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