linux shell problem

Question

I counld not run script properly.

If I run

#!/bin/sh
echo "Hello.World"

It's good.

But

#!/bin/sh
sudo su
apt-get update
apt-get upgrade

It failed.

What do I need extra ?

Thank you.

---

update:

Answer 1

由于不熟悉linux,
都是在windows下编辑文件在ssh 传过去

这里我用的编辑器 回车键 不是单纯的"0A"而是"0A0D"混入了"0D"导致linux 脚本识别错误。

Answer 2

#! /bin/sh
sudo apt-get update -y
sudo apt-get upgrade -y