为apt设置代理

1. 临时设置

sudo apt-get -o Acquire::http::proxy="http://127.0.0.1:8000/" update

创建/etc/apt/apt.conf

touch /etc/apt/apt.conf

写入如下内容：

Acquire::http::Proxy "http://yourproxyaddress:proxyport";

如果proxy需要密码，则格式如下：

Acquire::http::Proxy "http://username:password@yourproxyaddress:proxyport";