npm、yarn、git设置代理

$ npm config set proxy http://server:port
$ npm config set https-proxy http://server:port

$ npm config set proxy http://username:password@server:port
$ npm config set https-proxy http://username:pawword@server:port

删除代理
npm config rm proxy
npm config rm https-proxy

yarn config set proxy <http_proxy>
yarn config set https-proxy <https_proxy>

yarn config delete proxy  
yarn config delete https-proxy

npm config set registry https://registry.npm.taobao.org/
npm config set registry https://registry.npmjs.org/

yarn config set registry https://registry.npm.taobao.org/
yarn config set registry https://registry.npmjs.org/

git config --global http.proxy http://127.0.0.1:xxxx
git config --global https.proxy https://127.0.0.1:xxxx