Node.js

Install

apt install nodejs

npm install -g npm

npm install -g npm

Install version 18

Install 18:

curl -sL https://deb.nodesource.com/setup_18.x -o nodesource_setup.sh
sudo bash nodesource_setup.sh
sudo apt install nodejs

Install 20:

curl -fsSL https://deb.nodesource.com/setup_20.x | sudo -E bash -
sudo apt install nodejs

/etc/apt/sources.list.d/nodesource.list
 deb [arch=amd64 signed-by=/usr/share/keyrings/nodesource.gpg] https://deb.nodesource.com/node_20.x nodistro main

Node Version Manager - nvm

NOTE: nvm does local user install only - not global

Recommend using Node Version Manager

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

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/master/install.sh | bash

wget -qO- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.3/install.sh | bash
export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm
[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"  # This loads nvm bash_completion

nvm install 18
nvm use 18

nvm install 20
nvm use 20

Uninstall:

rm -rf .nvm
# remove the lines added to .bashrc

Version

npm -V  # lots of details upper case V
  ... usage help plus ...
  npm@10.7.0 /root/.nvm/versions/node/v20.15.0/lib/node_modules/npm

npm -v  # upper case V
  10.7.0

node -v  # lower case v
  v20.15.0