命令行使用yarn相关的命令报错：-bash: yarn: command not found。

error https://xxxxxx@xx%2fxxxxxx.tgz: Integrity check failed for "******" (computed integrity doesn't match our records, got "sha512-j0dWBlUGDVmFV5HD2Cw5vLqwBBfaIfKfc8kx/KlUCh64Dt7SMchpz9lO7fviQYUGwDIUPTIFGO2dOpV0jlswBA== sha1-Eb/deKDSFB1jRsJLztbHUlY9tiM=") info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command

使用 yarn --verbose 可以展示详细安装过程信息，对于包的安装调试非常有用。yarn --verbose yarn install v1.19.1 warning ../../package.json: No license field verbose 0.453537431 Checking for configuration file "/Users/teng/Downloads/0215/.npmrc". verbose 0.454731683 Checking for configuration file "/Users/teng/.npmrc". verbose 0.455675902 Found configuration file "/Users/teng/.npmrc". verbose 0.458505271 Checking for configuration file "/usr/local/etc/npmrc". verbose 0.4597321 Found configuration file "/usr/local/etc/npmrc". verbose 0.461008252 Checking for configuration file "/Users/teng/Downloads/0215/.npmrc". verbose 0.46181476 Checking for configuration file "/Users/teng/Downloads/.npmrc". verbose 0.462482914 Checking for configuration file "/Users/teng/.npmrc". verbose 0.462949705 Found configuration file "/Users/teng/.npmrc". verbose 0.465715502 Checking for configuration file "/Users/.npmrc". verbose 0.482803295 Checking for configuration file "/Users/teng/Downloads/0215/.yarnrc". verbose 0.483418382 Checking for configuration file "/Users/teng/.yarnrc". verbose 0.483786265 Found configuration file "/Users/teng/.yarnrc". verbose 0.485707548 Checking for configuration file "/usr/local/etc/yarnrc". verbose 0.488534003 Checking for configuration file "/Users/teng/Downloads/0215/.yarnrc". verbose 0.490599237 Checking for configuration file "/Users/teng/Downloads/.yarnrc". verbose 0.493375123 Checking for configuration file "/Users/teng/.yarnrc". verbose 0.49648842 Found configuration file "/Users/teng/.yarnrc". verbose 0.497646151 Checking for configuration file "/Users/.yarnrc". verbose 0.515482739 current time: 2022-02-15T03:50:59.668Z [1/4] 🔍 Resolving packages... [2/4] 🚚 Fetching packages...

npm cache 存放位置，以 linux 为例，默认存储在 ~/.npm 目录。npm cache 清理方法：npm cache clean；npm cache clean --force；npm cache clean -f