轉：https://blog.csdn.net/qq_32760017/article/details/83480284
首先Truffle是針對基於以太坊的Solidity語言的一套開發框架。
在Mac OS執行truffle init報錯：
Starting unbox... ================= ✔ Preparing to download box ✖ Downloading Unbox failed! ✖ Downloading Unbox failed! RequestError: Error: connect ECONNREFUSED 0.0.0.0:443 at new RequestError (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/request-promise-core/lib/errors.js:14:1) at Request.plumbing.callback (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/request-promise-core/lib/plumbing.js:87:1) at Request.RP$callback [as _callback] (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/request-promise-core/lib/plumbing.js:46:1) at self.callback (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/request/request.js:185:1) at Request.emit (events.js:315:20) at Request.onRequestError (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/request/request.js:881:1) at ClientRequest.emit (events.js:315:20) at TLSSocket.socketErrorListener (_http_client.js:432:9) at TLSSocket.emit (events.js:315:20) at emitErrorNT (internal/streams/destroy.js:84:8) at processTicksAndRejections (internal/process/task_queues.js:84:21) Truffle v5.1.23 (core: 5.1.23) Node v13.12.0
上網查了很多資料說法不一，有的說修改hosts文件的映射，有的也說可能是防火牆沒關閉，都嘗試了下還是不能解決。最終在 原文找到了解決方法。
解決方案如下：
使用google hosts文件替換本地的hosts文件即可。
然后執行truffle init成功，如下圖所示：
