apt-get 代理设置

/etc/apt/apt.conf   #如果没有这个文件就新建一个

　　

Acquire::http::proxy "http://127.0.0.1:8000/";
Acquire::ftp::proxy "ftp://127.0.0.1:8000/";
Acquire::https::proxy "https://127.0.0.1:8000/";