ALL_PROXY=socks://192.168.2.1:3128/

HTTPS_PROXY=https://192.168.2.1:3128/
HTTP_PROXY=http://192.168.2.1:3128/
NO_PROXY=localhost,127.0.0.0/8

all_proxy=socks://192.168.2.1:3128/
ftp_proxy=ftp://192.168.2.1:3128/
http_proxy=http://192.168.2.1:3128/
https_proxy=https://192.168.2.1:3128/
no_proxy=localhost,127.0.0.0/8