export http_proxy=http://127.0.0.1:7890/
export HTTP_PROXY=http://127.0.0.1:7890/
export https_proxy=http://127.0.0.1:7890/
export HTTPS_PROXY=http://127.0.0.1:7890/
export all_proxy=socks://127.0.0.1:7891/
export ALL_PROXY=socks://127.0.0.1:7891/
export no_proxy=localhost,127.0.0.0/8,::1
export NO_PROXY=localhost,127.0.0.0/8,::1