lua判断目录存在，创建目录

判断目录或文件是否存在

function file_exists(path)  local file = io.open(path, "rb")  if file then file:close() end  return file ~= nilend

创建目录

os.execute("mkdir ooxx\\ooxx\\ooxx\\ooxx) --windowsos.execute("mkdir -p ooxx/ooxx/ooxx) --unix,linux like