press F for sad Proxy

pi@scqcv:~ $ cat /etc/apt/apt.conf
Acquire::http::Proxy "http://user:pass@AddProxy:PortProxy";
Acquire::https::Proxy "https://user:pass@AddProxy:PortProxy";

atau

Environment variables

edit the file /etc/environment

And then add the following lines after PATH="something here"

http_proxy=http://username:password@host:port/
ftp_proxy=ftp://username:password@host:port/
https_proxy=https://username:password@host:port/