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我正在使用 Mac Big Sur。我想降级 Node.js 的版本。我尝试了以下（不使用 sudo 安装会出现权限错误）……</p> 

$ sudo n 14.15.1
   installed : v14.15.1 to /usr/local/bin/node
      active : v14.17.6 at /usr/local/opt/node@14/bin/node

但是当我检查时我仍然得到当前版本

$ node -v
v14.17.6

Fwiw，这就是我看到的“哪个节点”</p> 

$ which node
/usr/local/opt/node@14/bin/node

编辑：我的 $PATH 当我运行 'echo $PATH' ...

/usr/local/opt/node@14/bin:/Users/davea/.rvm/gems/ruby-2.7.1/bin:/Users/davea/.rvm/gems/ruby-2.7.1@global/bin:/Users/davea/.rvm/rubies/ruby-2.7.1/bin:/usr/local/opt/node@14/bin:/Users/davea/.nvm/versions/node/v14.18.1/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin:/Users/davea/.cabal/bin:/Users/davea/.ghcup/bin:/Users/davea/.cabal/bin:/Users/davea/.ghcup/bin:/Users/davea/.cabal/bin:/Users/davea/.ghcup/bin:/Users/davea/.rvm/bin:/Users/davea/.cabal/bin:/Users/davea/.ghcup/bin:/Users/davea/.cabal/bin:/Users/davea/.ghcup/bin:/Users/davea/.cabal/bin:/Users/davea/.ghcup/bin:/Users/davea/.rvm/bin:/Users/davea/.cabal/bin:/Users/davea/.ghcup/bin:/Users/davea/.cabal/bin:/Users/davea/.ghcup/bin:/Users/davea/.cabal/bin:/Users/davea/.ghcup/bin:/Users/davea/.rvm/bin

编辑 2：普通用户和 sudo 用户的 PATH 变量...

$ env | grep PATH
PATH=/Users/davea/.rvm/gems/ruby-2.7.1/bin:/Users/davea/.rvm/gems/ruby-2.7.1@global/bin:/Users/davea/.rvm/rubies/ruby-2.7.1/bin:/Users/davea/.nvm/versions/node/v14.18.1/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin:/Users/davea/.cabal/bin:/Users/davea/.ghcup/bin:/Users/davea/.cabal/bin:/Users/davea/.ghcup/bin:/Users/davea/.cabal/bin:/Users/davea/.ghcup/bin:/Users/davea/.rvm/bin

$ sudo env | grep PATH
PATH=/Users/davea/.rvm/gems/ruby-2.7.1/bin:/Users/davea/.rvm/gems/ruby-2.7.1@global/bin:/Users/davea/.rvm/rubies/ruby-2.7.1/bin:/Users/davea/.nvm/versions/node/v14.18.1/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin:/Users/davea/.cabal/bin:/Users/davea/.ghcup/bin:/Users/davea/.cabal/bin:/Users/davea/.ghcup/bin:/Users/davea/.cabal/bin:/Users/davea/.ghcup/bin:/Users/davea/.rvm/bin
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2 回答 2

2

该n消息告诉您它刚刚“安装”的版本和“活动”的版本不同。您安装了两个版本的节点，活动版本是PATH.

活动版本是/usr/local/opt/node@14/bin/node. 我不认识那个路径，不确定是用来安装什么的。它必须在您的PATH变量中，并且您的登录脚本中可能有关于添加/usr/local/opt/node@14/bin到PATH?

要使n安装的节点版本成为活动版本，您可以删除节点的另一个副本，或者/usr/local/bin更早地放入PATH以便首先找到它，或者最简单地/usr/local/opt/node@14/bin从 PATH 变量中删除。

于 2021-12-10T04:04:06.233 回答
0

如果您要使用多个节点版本，例如 at nvm：

nvm install <version>

更改版本：

nvm use <version>

文件：

https://github.com/nvm-sh/nvm

于 2021-12-10T04:51:45.107 回答