Linux Mint apt-get proxy 代理設置

creating the file/etc/apt/conf.d./30proxy and adding there the proxyinfo:

Acquire::http::proxy"http://IP:8080/";

Acquire::ftp::proxy"ftp://IP:8080/";

Acquire::https::proxy"https://IP:8080/";

Where "IP" is the IP of the proxy. After this, I couldsucessfully update my system.