无法在 ubuntu 上安装 npm

Question

尝试在 ubuntu 12.04 上安装 nodejs 和 npm。我用谷歌搜索并做到了。现在，我无法在机器上安装 npm。

sudo apt-get install npm

这给了我这个

The following packages have unmet dependencies:
 npm : Depends: nodejs but it is not going to be installed
       Depends: nodejs-dev
       Depends: node-request but it is not going to be installed
       Depends: node-mkdirp but it is not going to be installed
       Depends: node-minimatch but it is not going to be installed
       Depends: node-semver but it is not going to be installed
       Depends: node-ini but it is not going to be installed
       Depends: node-graceful-fs but it is not going to be installed
       Depends: node-abbrev but it is not going to be installed
       Depends: node-nopt but it is not going to be installed
       Depends: node-fstream but it is not going to be installed
       Depends: node-rimraf but it is not going to be installed
       Depends: node-tar but it is not going to be installed
       Depends: node-which but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

Answer 1

看起来您可能安装了chris-lea node.js ppa，这很好。但是，您不要从该 ppa 安装 npm，因为它破坏了 debian 软件包的工作方式。相反，只需安装nodejs. 安装完成后，运行npm -v您应该看到它现在已安装。如果您没有使用 chris-lea ppa，请在您通过 Google 搜索的网页上更新您的问题，以了解如何在 Ubuntu 上安装 nodejs。

Answer 2

尝试像这样安装 NodeJ：

sudo apt-get install nodejs

由于 NodeJs 安装了 node 和 npm

Answer 3

我按照此文档解决了这个问题。

使用 npm 时需要记住的提示：

mkdir ~/nodejs/ && cd ~/nodejs
sudo apt-get install npm
npm install
npm update

在开发应用程序时，如果nodejs需要任何特定模块，则运行

cd ~/nodejs
npm install modulename   #for example sendgrid

有时，模块需要全局安装；然后使用

sudo npm install modulename -g"

要删除模块：

cd ~/nodejs
npm uninstall modulename          # if locally installed or 
sudo npm uninstall modulename -g  # if globally installed

npm prune有助于消除未满足的依赖关系