mac 配置yarn 环境，command not found: yarn，解决无法npm -g的情况

遇到问题：zsh: command not found: yarn

解决方案

前提：电脑已安装node

node -v

全局安装

npm install yarn -g

如果这一步没有问题，就不需要往下看了,可以直接执行 yarn 命令了

如果遇到报错The operation was rejected by your operating system.npm ERR! It is likely you do not have the permissions to access this file as the current user

XXXX@CN_C02GXXX6M ~ % npm i yarn -g
npm ERR! code EACCES
npm ERR! syscall rename
npm ERR! path /usr/local/lib/node_modules/yarn
npm ERR! dest /usr/local/lib/node_modules/.yarn-Jrexx8nI
npm ERR! errno -13
npm ERR! Error: EACCES: permission denied, rename '/usr/local/lib/node_modules/yarn' -> '/usr/local/lib/node_modules/.yarn-Jrexx8nI'
npm ERR!  [Error: EACCES: permission denied, rename '/usr/local/lib/node_modules/yarn' -> '/usr/local/lib/node_modules/.yarn-Jrexx8nI'] {
npm ERR!   errno: -13,
npm ERR!   code: 'EACCES',
npm ERR!   syscall: 'rename',
npm ERR!   path: '/usr/local/lib/node_modules/yarn',
npm ERR!   dest: '/usr/local/lib/node_modules/.yarn-Jrexx8nI'
npm ERR! }
npm ERR! 
npm ERR! The operation was rejected by your operating system.
npm ERR! It is likely you do not have the permissions to access this file as the current user
npm ERR! 
npm ERR! If you believe this might be a permissions issue, please double-check the
npm ERR! permissions of the file and its containing directories, or try running
npm ERR! the command again as root/Administrator.

解决报错方案一：

sudo npm i yarn -g

解决报错方案二：（仅限电脑权限管控严格情况下，无法获取权限）

step1: 查看npm 全局文件安装地址

XXX@CN_CXXXMD6M ~ % npm list -g                    
/usr/local/lib
├── @quasar/cli@1.3.2
├── corepack@0.14.1
├── npm@8.19.2
└── yarn@1.22.18

step2: 从其他人电脑上同样的目录，拷贝出来两份文件，一个是命令的快捷方式文件，一个是环境变量所指的路径文件，粘贴到自己电脑相同位置

• 命令快照文件
  
  
  

• 全局命令所指文件
  

step3: 打开环境变量配置文件，配置环境变量

vim ~/.bash_profile

把下面内容粘贴到环境变量文件里，

export PATH=/usr/local/lib/node_modules/yarn/bin/:$PATH

保存.bash_profile的编辑，执行一下文件

source ~/.bash_profile

问题解决，大功告成

命令行重新打开，就可以使用yarn

yarn -v

今天就写到这里啦~

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