lua 創建文本，讀取文本

創建文件夾
os.execute("md lxw")

--寫文件
local file = io.open("lxw.txt","w")
file:write("happy")
file:close()

--讀文件
local file = io.open("lxw.txt","r")
print(file:read('*line'))
file:close()