1. Lua -i main.lua
-i 进入交互模式
-l 加载一个库
-e “lua code” 直接在命令行执行lua code
2. 注释
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3. 数据数型
There are eight basic types in Lua: nil, boolean, number, string, function, userdata, thread, and table.
原文：http://www.cnblogs.com/awiki/p/5194539.html