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       lua - Lua interpreter


       lua [ arguments ]


       lua  is  the  stand-alone  Lua  interpreter.  It loads and executes Lua
       programs, either in textual source form or in precompiled binary  form,
       as  output  by  luac,  the  Lua  compiler.   lua can be used as a batch
       interpreter and also interactively.

       The arguments can  be  options,  assignments,  or  filenames,  and  are
       processed in order, from left to right.

       Options start with - and are described below.

       An  assignment is an argument of the form a=b, which assigns the string
       ‘b’ to the global variable a.  Note that no quotes  are  needed  around
       the string if it does not contain spaces or other characters special to
       the shell.  This is for convenience only.  (In general, you  should  be
       careful  when  using quotes and spaces on the command line because they
       are usually handled by the shell.)

       If the argument is neither an option nor  an  assignment,  then  it  is
       assumed to be a filename, which is then loaded and executed.

       If  no  arguments  are  given,  then -v -i is assumed when the standard
       input is a terminal; otherwise, - is assumed.


       -      load the standard input as a file, that is,  not  interactively,
              even when the standard input is a terminal.

       -c     close Lua before exiting.

       -e stat
              execute  statement  stat.   You  will  need  to quote stat if it
              contains spaces or quotes.

       -f file
              collect all remaining arguments as strings into a  global  table
              named  arg and then execute file.  The arguments in arg start at
              0, which contains the string ‘file’.   The  index  of  the  last
              argument is stored in arg.n.

       -i     enter  interactive mode, displaying a prompt.  In this mode, lua
              reads lines from the standard input and executes  them  as  they
              are read.  Each line must contain a complete statement.  To span
              a statement across several lines, end each line with a backslash
              ‘\’.   The  prompt  shown  is  the  value of the global variable
              _PROMPT, if this value is a string.  So, to change  the  prompt,
              set  _PROMPT  to a string of your choice.  You can do that after
              calling  the  interpreter  or   on   the   command   line   with
              _PROMPT=´lua:  ´,  for  example.   (Note  the  need  for quotes,
              because the string contains a space.)  The default prompt is ‘‘>

       -q     enter interactive mode, but without displaying a prompt.

       -sn    set  the  stack  size  to n.  If present, this must be the first
              option.  Note that n  is  in  the  same  argument  as  -s.   For
              example, to specify a stack size of 2000, use -s2000.

       -v     print version information.




       Error messages should be self explanatory.


       R.  Ierusalimschy,  L. H. de Figueiredo, and W. Celes (lua@tecgraf.puc-

                              2000/09/04 21:41:28                       LUA(1)