-x, --proxy <[protocol://][user:password@]proxyhost[:port]>
Use the specified HTTP proxy.
If the port number is not specified, it is assumed at port 1080.
alias proxyon="export http_proxy='http://YOURPROXY:YOURPORT';export https_proxy='http://YOURPROXY:YOURPORT'"
alias proxyoff="export http_proxy='';export https_proxy=''"