.\" .\" SPDX-License-Identifier: BSD-2-Clause .\" .\" Copyright (c) 2025 The FreeBSD Foundation .\" .\" 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 April 28, 2025 .Dt FLUA 1 .Os .Sh NAME .Nm flua .Nd Lua interpreter for the FreeBSD base system .Sh SYNOPSIS .Nm flua .Op Fl EWiv .Op Fl e Ar string .Op Fl l Ar module .Op Fl l Ar g=module .Op Ar script Op Ar args .Op Fl - .Op Fl .Sh DESCRIPTION .Nm is a minimal Lua interpreter integrated into the FreeBSD base system. It is derived from Lua 5.4 with modifications to suit the needs of .Fx build infrastructure and system tooling. .Nm is intended for internal use within the base system and is .Em not designed for general-purpose scripting or use by third-party applications. .Pp Unlike full Lua installations provided by the Ports Collection, .Nm has a reduced feature set and is limited to meeting the requirements of base system environments such as the bootloader. .Sh USAGE .Nm is typically invoked internally by FreeBSD base system tools and build scripts. While it accepts Lua source files and arguments in a standard fashion, its limited environment and module support make it unsuitable for general scripting use. .Sh INCLUDED MODULES .Nm includes a subset of functionality from a small number of standard Lua modules as well as bespoke modules necessary for the base system: .Bl -bullet .It lfs (LuaFileSystem) – file attribute and directory manipulation .It lposix - basic POSIX system calls .It .Xr freebsd.kenv 3lua .It .Xr freebsd.sys.linker 3lua .It .Xr hash 3lua .It .Xr jail 3lua .El .Sh NOTES .Nm should not be used as a replacement for .Xr lua 1 from the Ports Collection (e.g., .Pa lang/lua54 ) as it may be modified or updated to a newer Lua version in the future without retaining backwards compatibility. .Sh SEE ALSO .Xr freebsd.kenv 3lua , .Xr freebsd.sys.linker 3lua , .Xr hash 3lua , .Xr jail 3lua , .Xr style.lua 9 .Sh HISTORY .Nm first appeared in .Fx 14.0 .
