完全移除节点:

  brew uninstall --force node

安装:

brew install node;
which node # => /usr/local/bin/node
export NODE_PATH='/usr/local/lib/node_modules'

对于MAC用户，以下步骤对我来说是有效的。

如果你得到Error for Brew，下面是你需要在终端中首先输入的命令:

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"

Then run following commands:

$ brew update
$ brew uninstall node
$ brew install node
$ brew postinstall 

你可以通过为npm和node创建符号链接来解决这个问题，这是快速而简单的:

sudo ln -s $(which npm) /usr/local/bin/npm
sudo ln -s $(which node) /usr/local/bin/node

我使用which来获取位置，然后将其作为变量传递给命令，例如$(npm)。

我也为node创建了一个符号链接，因为npm依赖于 节点。

然后你就可以:

sudo npm -v

不需要重新安装节点或在整个目录上使用chmod。

**编辑**

警告!做chmod 777是一个相当激进的解决方案。先试试这些，一次一个，其中一个管用就停止:

$ sudo chmod -R 777 /usr/local/lib/node_modules/npm $ sudo chmod -R 777 /usr/local/lib/node_modules . sh $ sudo chmod g+w /usr/local/lib $ sudo chmod g+rwx /usr/local/lib

---

$ brew postinstall节点是我唯一会遇到问题的安装部分

Permission denied - /usr/local/lib/node_modules/npm/.github

So I

// !! READ EDIT ABOVE BEFORE RUNNING THIS CODE !!
$ sudo chmod -R 777 /usr/local/lib
$ brew postinstall node

中提琴，NPM现在被连接了

$ npm -v
3.10.10

---

额外的

如果你在lib上使用-R 777，我的建议是将嵌套文件和目录设置为默认设置:

$ find /usr/local/lib -type f -print -exec chmod 644 {} \; $ find /usr/local/lib -type d -print -exec chmod 755 {} \; $ chmod /usr/local/lib 755

I had the same issue,the reason for it was npm package manager was not installed while installing node. This was caused because of the following mistake: In the installation process there is a step called "Custom Setup", here you have the option to choose one of the following: 1) Node.js runtime (This is selected by default). 2) npm package manager 3) Online documentation shortcuts. 4) Add to Path. If you proceed as it is npm package manager will not be installed and hence you will get the error.

解决方案: 当你得到这些选项时，选择npm包管理器。 这对我很管用。

对于CentOS用户，这适用于我:

sudo yum install npm