E: Unable to locate package npm

问题

When i try to install npm with sudo apt-get install npm, i get following error:

Why can't apt find npm? Im using Debian 9 and already sudo apt-get install nodejs.

回答1:

From the official Node.js documentation:

A Node.js package is also available in the official repo for Debian Sid (unstable), Jessie (testing) and Wheezy (wheezy-backports) as "nodejs". It only installs a nodejs binary.

So, if you only type sudo apt-get install nodejs , it does not install other goodies such as npm.

You need to type:

curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
sudo apt-get install -y nodejs

Optional: install build tools

To compile and install native add-ons from npm you may also need to install build tools:

sudo apt-get install -y build-essential

More info: Docs

回答2:

I ran into the same issue on Debian 9.2, this is what I did to overcome it.

Installation

sudo apt install curl
curl -sL https://deb.nodesource.com/setup_6.x | sudo bash -
sudo apt-get install -y nodejs
sudo apt-get install -y npm

Check installed versions

node --version
npm --version

Originally sourced from "How to install Node.js LTS on Debian 9 stretch" http://linuxbsdos.com/2017/06/26/how-to-install-node-js-lts-on-debian-9-stretch/

回答3:

Your system can't find npm package because you haven't add nodejs repository to your system..

Try follow this installation step:
Add nodejs PPA repository to our system and python software properties too

sudo apt-get install curl python-software-properties 
// sudo apt-get install curl software-properties-common

curl -sL https://deb.nodesource.com/setup_10.x | sudo bash -
sudo apt-get update

Then install npm

sudo apt-get install nodejs

Check if npm and node was installed and you're ready to use node.js

node -v
npm -v

If someone was failed to install nodejs.. Try remove the npm first, maybe the old installation was broken..

sudo apt-get remove nodejs
sudo apt-get remove npm

Check if npm or node folder still exist, delete it if you found them

which node
which npm

回答4:

Encountered this in Ubuntu for Windows, try running first

sudo apt-get update

then

sudo apt-get install npm

回答5:

This will resolve your error. Run these commands in your terminal. These commands will add the older versions. You can update them later or you can change version here too before running these commands one by one.

sudo apt-get install build-essential
wget http://nodejs.org/dist/v0.8.16/node-v0.8.16.tar.gz
tar -xzf node-v0.8.16.tar.gz
cd node-v0.8.16/
./configure
make
sudo make install

回答6:

For Debian Stretch, nodejs does not include npm, and to install it as a separate package, you have to enable stretch-backports.

echo 'deb http://deb.debian.org/debian stretch-backports main' |
sudo tee /etc/apt/sources.list.d/stretch-backports.list
apt-get update -y
apt-get -t stretch-backports install -y npm

In Buster, npm is a regular package, so going forward, this should just work. But some of us will still be stuck partially on Stretch boxes for some time to come.