Debian apt-get不能更换或安装解决办法

1. 打开apt源文件，最好用winscp，新手友好

vi /etc/apt/sources.list

2. 更改源地址，其他注释了

deb http://security.debian.org/ wheezy/updates main contrib
deb-src http://security.debian.org/ wheezy/updates main contrib
deb http://http.us.debian.org/debian/ stable main

apt-get update