jetson nano更改源

Nano的鏡像默認是國外的源，速度很慢，國內的源有的上不去，有的包無法安裝，經過測試清華大學的源完美可用，現放上教程

首先備份原本的source.list文件

    sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak    #為防止誤操作后無法恢復，先備份原文件sources.list
    sudo gedit /etc/apt/sources.list  

然后刪除所有內容，復制

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

到sources.list后保存，之后打開終端輸入

sudo apt-get update

就可以了。