首次运行truffle dashboard命令遭遇EACCES权限拒绝错误求助

执行truffle dashboard时触发权限拒绝错误，具体报错如下：

Error: EACCES: permission denied, open '/Users/rishikesh/Library/Preferences/truffle-nodejs/config.json.tmp-4644209492910867'
    at openSync (node:fs:601:3)
    at attempt (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/atomically/dist/utils/retryify.js:33:1)
    at Object.writeFileSync (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/atomically/dist/index.js:136:1)
    at Conf._write (/usr/local/lib/node_modules/truffle/build/webpack:/packages/config/node_modules/conf/dist/source/index.js:375:1)
    at Conf.set store [as store] (/usr/local/lib/node_modules/truffle/build/webpack:/packages/config/node_modules/conf/dist/source/index.js:296:1)
    at Conf.set (/usr/local/lib/node_modules/truffle/build/webpack:/packages/config/node_modules/conf/dist/source/index.js:189:1)
    at /usr/local/lib/node_modules/truffle/build/webpack:/packages/dashboard/dist/lib/DashboardServer.js:76:1
    at Layer.handle [as handle_request] (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/express/lib/router/layer.js:95:1)
    at next (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/express/lib/router/route.js:137:1)
    at Route.dispatch (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/express/lib/router/route.js:112:1)
    at Layer.handle [as handle_request] (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/express/lib/router/layer.js:95:1)
    at /usr/local/lib/node_modules/truffle/build/webpack:/node_modules/express/lib/router/index.js:281:1
    at Function.process_params (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/express/lib/router/index.js:341:1)
    at next (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/express/lib/router/index.js:275:1)
    at /usr/local/lib/node_modules/truffle/build/webpack:/node_modules/express/node_modules/body-parser/lib/read.js:130:1
    at invokeCallback (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/express/node_modules/raw-body/index.js:224:1)
    at done (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/express/node_modules/raw-body/index.js:213:1)
    at IncomingMessage.onEnd (/usr/local/lib/node_modules/truffle/build/webpack:/node_modules/express/node_modules/raw-body/index.js:273:1)
    at IncomingMessage.emit (node:events:513:28)
    at endReadableNT (node:internal/streams/readable:1359:12)
    at processTicksAndRejections (node:internal/process/task_queues:82:21)

解决方法： #

• 修复目标目录权限
  给truffle-nodejs目录赋予当前用户读写权限，执行以下命令：

  sudo chown -R $USER:$USER /Users/rishikesh/Library/Preferences/truffle-nodejs
  

  输入系统密码后，重新运行truffle dashboard即可。

• 重新安装Truffle到用户目录
  若全局安装的Truffle存在权限隐患，先卸载再以用户身份重新安装：

  npm uninstall -g truffle
  npm install -g truffle --user
  

  也可以通过nvm管理Node版本，避免系统级权限冲突。

• 临时sudo运行（不推荐）
  虽然能临时绕过权限问题，但会导致后续文件权限混乱，仅作应急使用：

  sudo truffle dashboard
  

内容的提问来源于stack exchange，提问作者Rishikesh singh