node:install

The command "apt-get install nodejs" is used to install the Node.js runtime environment on a system (typically a Linux-based operating system). Here's how it works:

1. "apt-get" is a package management command-line tool used in Debian-based Linux distributions (such as Ubuntu) to handle installing, upgrading, and removing software packages.

2. "install" is an argument that specifies the action to be performed by the apt-get command. In this case, it indicates that we want to install a software package.

3. "nodejs" is the specific package name that we want to install. Node.js is a JavaScript runtime built on Chrome's V8 JavaScript engine. It allows developers to run JavaScript code outside of a web browser, enabling server-side development.

When you run the "apt-get install nodejs" command, it instructs the package manager to fetch the Node.js package from the available software repositories and install it on your system. The package manager takes care of downloading and installing all required dependencies as well.

After successful installation, you can use the "node" command in the terminal to run JavaScript code directly on your system.

It's worth noting that the actual package name may vary depending on the Linux distribution and version you are using. For example, on certain systems, the package name might be "node" or "nodejs-legacy" instead of "nodejs".