$ export http_proxy="http://USER:PASSWORD@PROXY_SERVER:PORT" $ export https_proxy="https://USER:PASSWORD@PROXY_SERVER:PORT" $ export ftp_proxy="http://USER:PASSWORD@PROXY_SERVER:PORT"
https://www.shellhacks.com/linux-proxy-server-settings-set-proxy-command-line/
https://www.cyberciti.biz/faq/linux-unix-set-proxy-environment-variable/