shell use http proxy
export http_proxy='http://172.16.0.2:8118'
export https_proxy='http://172.16.0.2:8118'
export ftp_proxy='http://172.16.0.2:8118'
export no_proxy='172.16.*.*,127.0.*.*,192.168.*.*,10.*.*.*,*.local'
curl -L https://www.google.com/