LUA(1) User Commands LUA(1)

NAME

lua - Lua interpreter

SYNOPSIS

lua [ options ] [ script [ args ] ]

DESCRIPTION

lua is the standalone Lua interpreter. It loads and executes Lua
programs, either in textual source form or in precompiled binary
form. (Precompiled binaries are output by luac, the Lua compiler.)
lua can be used as a batch interpreter and also interactively.

The given options are handled in order and then the Lua program in
file script is loaded and executed. The given args are available to
script as strings in a global table named arg. If no options or
arguments are given, then -v -i is assumed when the standard input is
a terminal; otherwise, - is assumed.

In interactive mode, lua prompts the user, reads lines from the
standard input, and executes them as they are read. If the line
contains an expression or list of expressions, then the line is
evaluated and the results are printed. If a line does not contain a
complete statement, then a secondary prompt is displayed and lines
are read until a complete statement is formed or a syntax error is
found.

At the very start, before even handling the command line, lua checks
the contents of the environment variables LUA_INIT_5_3 or LUA_INIT,
in that order. If the contents is of the form '@filename', then
filename is executed. Otherwise, the string is assumed to be a Lua
statement and is executed.

OPTIONS

-e stat
execute statement stat.

-i enter interactive mode after executing script.

-l name
execute the equivalent of name=require('name') before
executing script.

-v show version information.

-E ignore environment variables.

-- stop handling options.

- stop handling options and execute the standard input as a
file.

SEE ALSO

luac(1)
The documentation at lua.org, especially section 7 of the reference
manual.

DIAGNOSTICS

Error messages should be self explanatory.

AUTHORS

R. Ierusalimschy, L. H. de Figueiredo, W. Celes

$Date: 2016/10/17 15:43:50 $ LUA(1)