这个怎么用shell写。 我现在是 终端里面 go run s.go . 然后 分别输入 1,2,3,4,5 我想写个shell 启动，然后自动选择 1,2,3,4,5，谢谢。

func main() { g_run_as = AS_ROUTER g_local_ip = get_local_ip() /*为磁盘创建bbw文件夹*/ /*选择服务器启动类型*/ inputReader := bufio.NewReader(os.Stdin) fmt.Println("Please enter your choice:") fmt.Println("Input 1 to Run server router") fmt.Println("Input 2 to Run server pos ") fmt.Println("Input 3 to Run server msg ") fmt.Println("Input 4 to Run server set ") fmt.Println("Input 5 to Run server login") fmt.Println("Input 6 to Run test") input, err := inputReader.ReadString('\n') if err != nil { fmt.Println("There were errors reading, exiting program.") return } //fmt.Printf("Your Input is %s", input) switch input { case "1\n": g_run_as = AS_ROUTER router() case "2\n": g_run_as = AS_POS pos() case "3\n": g_run_as = AS_MSG msg() case "4\n": g_run_as = AS_SET set() case "5\n": g_run_as = AS_LOGIN login() case "6\n": //g_run_as = AS_LOGIN test() } }