Node Package Manager (npm) is both an online repository for modules and packages of Node.js, and a command-line utility for installation, version, and dependency management.
Npm is easy to use and makes working with Node.js very convenient. Additionally, npm comes with Node.js installation so you do not have to install it separately.
In this context, we shall look into how to install Node.js and Npm in your Ubuntu operating system.
You will need a curl command to enable the NodeSource repository. If you lack curl on your system, install curl on your system using the following command:
$ sudo apt-get install curl
To enable the NodeSource repository and update the apt-cache. run the following command:
$ curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -
Now you can go ahead and install the Node.js package with the following apt command:
$ sudo apt install nodejs
You can see the Node.js version with the following command:
$ node --version
As npm comes with the Node.js installation, you can check the npm version with the following command:
$ npm --version
If you want your repository to be self-maintained and updated so that you can work with the latest version of Node.js, you can use the NodeSource PPA for Node.js installation.
Install the NodeSource PPA with the following curl command:
$ curl -sL https://deb.nodesource.com/setup_16.x -o nodesource_setup.sh
Open the Nodesource setup script with nano editor and verify the configurations:
$ nano nodesource_setup.sh
To add the PPA to the configuration list and update the local cache, run the script:
$ sudo bash nodesource_setup.sh
Now you can install Node.js with the following command:
$ sudo apt install nodejs
To verify the installation and version of Node.js, run:
$ node -v
Node Version Manager (NVM) is a script that helps with the installation and management of multiple versions of Node.js in your system.
Download NVM from the GitHub repository with the following curl command:
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.3/install.sh | bash
You can see that the installation has made changes to the .bashrc file. Source your.bashrc file with the following command to proceed with the installation:
$ source ~/.bashrc
To see available versions of Node.js, run the following command:
$ nvm list-remote
Select the version and run the following command with your selected version:
$ nvm install v17.0.1
To see all the Node.js installations in your system, run the following command:
$ nvm list
You can see the current version that is in use mentioned in the first line of the output.
You can switch to another installed version and use it with the following command.
$ nvm use 17.0.1