jetson-nano换源 - 一只胖橘

jetson nano官方的定制Ubuntu18.04 arm64系统，软件源为国外服务器，网速会很慢，需要换国内的ARM源。

备份source.list文件
- ```
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
```
- 为防止误操作后无法恢复，先备份原文件sources.list
更换源
- ```
sudo vim /etc/apt/sources.list
```
- 打开sources.list，将原来的内容使用”#”符号全部注释掉，然后在文件结尾出添加中国科学技术大学或清华的源 (我用的是中科大的)

清华源

deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial-updates main restricted universe multiverse

deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial-updates main restricted universe multiverse

deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial-security main restricted universe multiverse

deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial-security main restricted universe multiverse

deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial-backports main restricted universe multiverse

deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial-backports main restricted universe multiverse

deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial main universe restricted

deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial main universe restricted

科大的源

deb http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-updates main restricted universe multiverse

deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-updates main restricted universe multiverse

deb http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-security main restricted universe multiverse

deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-security main restricted universe multiverse

deb http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-backports main restricted universe multiverse

deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-backports main restricted universe multiverse

deb http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial main universe restricted

deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial main universe restricted

替换结束后更新:

```
sudo apt-get update 
```
```
sudo apt-get upgrade
```