问题
I wish to do
lua prog.lua arg1 arg2
from the command line
Inside prog.lua, I want to say, for instance
print (arg1, arg2, '\n')
Lua doesn't seem to have argv[1] etc and the methods I've seen for dealing with command line arguments seem to be immature and / or cumbersome. Am I missing something?
回答1:
You're missing the arg vector, which has the elements you want in arg[1], arg[2], and so on:
% lua -i -- /dev/null one two three
Lua 5.1.3 Copyright (C) 1994-2008 Lua.org, PUC-Rio
> print(arg[2])
two
>
More info in the Lua manual section on Lua standalone (thanks Miles!).
回答2:
In addition to the arg table, ... contains the arguments (arg[1] and up) used to invoke the script.
% lua -i -- /dev/null one two three Lua 5.1.3 Copyright (C) 1994-2008 Lua.org, PUC-Rio > print(...) one two three
回答3:
Lua stores arguments in a table. This table is the "arg" table. You can access the passed arguments inside using arg[1], arg[2], ...
arg[0] is the name of the lua program. arg[1] is the first argument passed, arg[2] is the second argument passed and so on...
回答4:
If you run file.lua in cmd of freeswitch
freeswitch> luarun prog.lua arg1
You can use prog.lua:
#print(argv[1])
And run: $lua prog.lua arg1 (run in script folder)
You can use prong.lua:
#print(arg[1])
来源：https://stackoverflow.com/questions/2945819/interactive-lua-command-line-arguments