different program use proxy in terminal/cmdline useage. example: git / python / npm

shellppexample.md

$ git config --global --unset https.proxy
$ git config --global http.proxy	

$ python -m pip --proxy http://127.0.0.1:1080 install --upgrade pip

$ npm config set proxy http://127.0.0.1:1080
$ npm config set https-proxy http://127.0.0.1:1080

export HTTP_PROXY=http://127.0.0.1:1080
export HTTPS_PROXY=http://127.0.0.1:1080

set  HTTP_PROXY=http://127.0.0.1:1080