Node.js is a software package that provides an open-source, cross-platform JavaScript runtime environment. It allows developers to build scalable, networked applications with event-driven programming, which can handle multiple concurrent connections without blocking I/O operations.
Node.js uses the V8 JavaScript engine from Google Chrome, which compiles JavaScript code to machine code, enabling faster execution. Node.js also includes a built-in library of modules that simplify the development of web applications, including HTTP, HTTPS, and WebSocket protocols.
Some key features of Node.js include:
- Asynchronous and non-blocking I/O: Node.js uses an event-driven architecture that allows it to handle I/O operations asynchronously, without blocking the event loop. This makes it particularly well-suited for building real-time applications that require high concurrency and low latency.
- Scalability: Node.js is designed to scale horizontally across multiple processors or servers, using a message-passing system to communicate between different instances.
- NPM: Node.js includes a package manager called NPM (Node Package Manager) that allows developers to easily install, manage, and share packages of reusable code.
Node.js is often used for building server-side applications, particularly web applications and APIs. It is also commonly used in conjunction with front-end JavaScript frameworks like React, Angular, and Vue.js to create full-stack JavaScript applications.
Uninstalling nodejs package in Ubuntu
You can uninstall nodejs package from Ubuntu using the below command:
$ sudo apt-get remove nodejs
Uninstall nodejs including dependent package
If you would like to remove nodejs and it’s dependent packages which are no longer needed from Ubuntu:
$ sudo apt-get remove --auto-remove nodejs
Use Purging nodejs
If you use with purge options to nodejs package all the configuration and dependent packages will be removed.
$ sudo apt-get purge nodejs
If you use purge options along with auto remove, will be removed everything regarding the package, It’s really useful when you want to reinstall again.
$ sudo apt-get purge --auto-remove nodejs