npmでエラー、proxyとかregistryらしい

npm ERR! Error: getaddrinfo ENOENT
npm ERR!     at errnoException (dns.js:31:11)
npm ERR!     at Object.onanswer [as oncomplete] (dns.js:123:16)
npm ERR! If you need help, you may report this log at:
npm ERR!     <http://github.com/isaacs/npm/issues>
npm ERR! or email it to:
npm ERR!     <npm-@googlegroups.com>
    :

以下のコマンドを実行する

$ npm set proxy http://proxyHost:proxyPort
$ npm config set registry http://registry.npmjs.org/