lua5.1 -v (return code: 0)
Lua 5.1.5 Copyright (C) 1994-2012 Lua.org, PUC-Rio
lua5.1 --help (return code: 1)
usage: lua5.1 [options] [script [args]].
Available options are:
-e stat execute string 'stat'
-l name require library 'name'
-i enter interactive mode after executing 'script'
-v show version information
-- stop handling options
- execute stdin and stop handling options