最近在iMac上第二次搭建 Appium，又碰到了许多新的问题，
比如 报错 “sh -c node install-npm.js ”error：
-iMac ~ % sudo cnpm install -g appium@1.17.1 --force Downloading appium to /usr/local/lib/node_modules/appium_tmp Copying /usr/local/lib/node_modules/appium_tmp/_appium@1.17.1@appium to /usr/local/lib/node_modules/appium Installing appium's dependencies to /usr/local/lib/node_modules/appium/node_modules [1/32] async-lock@^1.0.0 installed at node_modules/_async-lock@1.3.0@async-lock [2/32] find-root@^1.1.0 installed at node_modules/_find-root@1.1.0@find-root [3/32] bluebird@3.x installed at node_modules/_bluebird@3.7.2@bluebird [4/32] fsevents@2.x installed at node_modules/_fsevents@2.3.2@fsevents [5/32] dateformat@^3.0.3 installed at node_modules/_dateformat@3.0.3@dateformat [6/32] word-wrap@^1.2.3 installed at node_modules/_word-wrap@1.2.3@word-wrap [7/32] longjohn@^0.2.12 installed at node_modules/_longjohn@0.2.12@longjohn [8/32] @babel/runtime@^7.6.0 installed at node_modules/_@babel_runtime@7.14.8@@babel/runtime [9/32] lodash@^4.17.11 installed at node_modules/_lodash@4.17.21@lodash [10/32] appium-mac-driver@1.x installed at node_modules/_appium-mac-driver@1.10.2@appium-mac-driver [11/32] appium-windows-driver@1.x installed at node_modules/_appium-windows-driver@1.19.0@appium-windows-driver [12/32] asyncbox@2.x installed at node_modules/_asyncbox@2.8.0@asyncbox [13/32] teen_process@1.x installed at node_modules/_teen_process@1.16.0@teen_process [14/32] argparse@^1.0.10 installed at node_modules/_argparse@1.0.10@argparse [15/32] request-promise@4.x installed at node_modules/_request-promise@4.2.6@request-promise [16/32] source-map-support@0.x installed at node_modules/_source-map-support@0.5.19@source-map-support [17/32] appium-espresso-driver@^1.0.0 installed at node_modules/_appium-espresso-driver@1.45.1@appium-espresso-driver [18/32] appium-uiautomator2-driver@^1.37.1 installed at node_modules/_appium-uiautomator2-driver@1.67.0@appium-uiautomator2-driver [19/32] appium-xcuitest-driver@^3.22.0 installed at node_modules/_appium-xcuitest-driver@3.50.1@appium-xcuitest-driver [20/32] semver@^7.0.0 installed at node_modules/_semver@7.3.5@semver [21/32] appium-android-driver@^4.20.0 installed at node_modules/_appium-android-driver@4.47.0@appium-android-driver [22/32] continuation-local-storage@3.x installed at node_modules/_continuation-local-storage@3.2.1@continuation-local-storage [23/32] request@^2.81.0 installed at node_modules/_request@2.88.2@request [24/32] appium-ios-driver@4.x installed at node_modules/_appium-ios-driver@4.8.3@appium-ios-driver [25/32] npmlog@4.x installed at node_modules/_npmlog@4.1.2@npmlog [26/32] appium-flutter-driver@^0 installed at node_modules/_appium-flutter-driver@0.0.29@appium-flutter-driver [27/32] appium-fake-driver@^0.x installed at node_modules/_appium-fake-driver@0.10.0@appium-fake-driver [28/32] appium-youiengine-driver@^1.2.0 installed at node_modules/_appium-youiengine-driver@1.2.9@appium-youiengine-driver [29/32] appium-base-driver@^5.0.0 installed at node_modules/_appium-base-driver@5.8.1@appium-base-driver [30/32] appium-tizen-driver@^1.1.1-beta.4 installed at node_modules/_appium-tizen-driver@1.1.1-beta.5@appium-tizen-driver [31/32] winston@3.x installed at node_modules/_winston@3.3.3@winston [32/32] appium-support@2.x installed at node_modules/_appium-support@2.54.1@appium-support execute post install 3 scripts... [1/3] scripts.install appium-windows-driver@1.x run "node install-npm.js", root: "/usr/local/lib/node_modules/appium/node_modules/_appium-windows-driver@1.19.0@appium-windows-driver" Not installing WinAppDriver since did not detect a Windows system [1/3] scripts.install appium-windows-driver@1.x finished in 358ms [2/3] scripts.postinstall appium-uiautomator2-driver@1.67.0 › appium-chromedriver@^4.23.1 run "node install-npm.js", root: "/usr/local/lib/node_modules/appium/node_modules/_appium-chromedriver@4.27.3@appium-chromedriver" [20:58:33] Error installing Chromedriver: Request failed with status code 404 [20:58:33] Error: Request failed with status code 404 at createError (/usr/local/lib/node_modules/appium/node_modules/_axios@0.21.1@axios/lib/core/createError.js:16:15) at settle (/usr/local/lib/node_modules/appium/node_modules/_axios@0.21.1@axios/lib/core/settle.js:17:12) at IncomingMessage.handleStreamEnd (/usr/local/lib/node_modules/appium/node_modules/_axios@0.21.1@axios/lib/adapters/http.js:260:11) at IncomingMessage.emit (events.js:387:35) at endReadableNT (internal/streams/readable.js:1317:12) at processTicksAndRejections (internal/process/task_queues.js:82:21) [20:58:33] Downloading Chromedriver can be skipped by using the '--chromedriver-skip-install' flag or setting the 'APPIUM_SKIP_CHROMEDRIVER_INSTALL' environment variable. [npminstall:runscript:error] appium-uiautomator2-driver@1.67.0 › appium-chromedriver@^4.23.1 scripts.postinstall run "node install-npm.js" error: Error [RunScriptError]: Run "sh -c node install-npm.js" error, exit code 1 at ChildProcess.<anonymous> (/usr/local/lib/node_modules/cnpm/node_modules/runscript/index.js:96:21) at ChildProcess.emit (events.js:375:28) at maybeClose (internal/child_process.js:1055:16) at Process.ChildProcess._handle.onexit (internal/child_process.js:288:5) { stdio: [Object], exitcode: 1 } Install fail! RunScriptError: post install error, please remove node_modules before retry! Run "sh -c node install-npm.js" error, exit code 1 RunScriptError: Run "sh -c node install-npm.js" error, exit code 1 at ChildProcess.<anonymous> (/usr/local/lib/node_modules/cnpm/node_modules/runscript/index.js:96:21) at ChildProcess.emit (events.js:375:28) at maybeClose (internal/child_process.js:1055:16) at Process.ChildProcess._handle.onexit (internal/child_process.js:288:5) npminstall version: 5.0.1 npminstall args: /usr/local/bin/node /usr/local/lib/node_modules/cnpm/node_modules/npminstall/bin/install.js --fix-bug-versions --china --userconfig=/Users/xxxx/.cnpmrc --disturl=https://npm.taobao.org/mirrors/node --registry=https://registry.nlark.com -g appium@1.17.1 --force
经验告诉我，肯定又是node的问题，于是，重新卸载node、再重新安装node。
（ node Mac 彻底卸载 ：https://www.cnblogs.com/everlose/p/12846234.html）
结果居然不行！！！
另外还尝试了：
1）jenkins执行npm install 或cnpm install时安装chromeDriver报错：http://zpycloud.com/archives/1251
——也不行
2）npm安装Appium报错 Error: Request failed with status code 404，[npminstall:runscript:error] appium-android：https://blog.csdn.net/moso_wang/article/details/116132319
解决办法：先删除npm下面的node_modules的东西， 然后执行下面的命令: npm config set registry https://registry.npm.taobao.org npm install appium -g --chromedriver_cdnurl=http://cdn.npm.taobao.org/dist/chromedriver
——也不行
3）
最终尝试这个方法获救！！！！
搜索：appium-chromedriver@4.27.1 postinstall: `node install-npm.js`
【appium-chromedriver@4.26.2 postinstall: `node install-npm.js` 报错 解决办法：https://blog.csdn.net/weixin_43928801/article/details/116018380】
救命的 key word :
提示npm中有文件缺失，重新安装更新npm后就可以安装了
使用命令sudo npm install -g npm
—— 就是需要重新安装下 npm !！！
因为 前面的 npm 是没有单独安装的，而是在安装 node的时候，自动装了 npm 。
终于可以！：
安装完 appium-doctor后检查，终于可以了！！
