Linux узнать версию node js

Check for current Node Version

I need to programmatically access the current node version running in a library I am writing. Can’t seem to find this in the docs.

10 Answers 10

if process.version is ‘v0.11.5’, then get 0.11 .

Suddenly this way 0.10 become 0.1 > process.version ‘v0.10.40’ > Number(process.version.match(/^v(\d+\.\d+)/)[1]) 0.1

Actually it would be better to use process.versions object which provides a lot of versions for the different node components. Example:

Use semver to compare process.version :

const semver = require('semver'); if (semver.gte(process.version, '0.12.18'))

If you need to only check for the major version, you can use this quick-and-dirty snippet:

const NODE_MAJOR_VERSION = process.versions.node.split('.')[0]; if (NODE_MAJOR_VERSION

• process.versions.node is easier to work with than process.version , as you do not have to worry about whether the version starts with a leading v .
• If you still need to distinguish between ancient versions (e.g., 0.10 and 0.12), this will not work, as they will all be considered version «0» .

I refined alsotang’s answer a bit to compare versions:

const m = process.version.match(/(\d+)\.(\d+)\.(\d+)/); const [major, minor, patch] = m.slice(1).map(_ => parseInt(_)); 

To perform an assertion, do it like this:

if (major >= 13 || (major >= 12 && minor >= 12))

This can be shortened to a one-liner to use in bash:

NODE_VERSION=$(node -e "const v = process.version.match(/(\\d+)\.(\\d+)\.(\\d+)/).slice(1).map(_ => parseInt(_)); console.log(v[0] >= 13 || (v[0] >= 12 && v[1] >= 12))") if $NODE_VERSION -eq "true" ; then echo "NodeJS is at least v12.12.0." fi 

$nodeVersion = $(node -e "const v = process.version.match(/(\d+)\.(\d+)\.(\d+)/).slice(1).map(_ => parseInt(_)); console.log(v[0] >= 13 || (v[0] >= 12 && v[1] >= 12))") if ($nodeVersion -eq "true")

If you access node js running environments, there are 2 main entries: (one simeple, one detail)

I had the similar issue with my codebase. I wanted to know the current NodeJs version I am going to use to run my server at runtime. For that, I wrote a code which can be run before starting the Server using npm run start script. Found below code helpful from this question.

'use strict'; const semver = require('semver'); const engines = require('./package').engines; const nodeVersion = engines.node; // Compare installed NodeJs version with required NodeJs version. if (!semver.satisfies(process.version, nodeVersion)) < console.log(`NodeJS Version Check: Required node version $NOT SATISFIED with current version $.`); process.exit(1); > else < console.log(`NodeJS Version Check: Required node version $SATISFIED with current version $.`); > 

My package.json looks like this:

< "name": "echo-server", "version": "1.0.0", "engines": < "node": "8.5.0", "npm": "5.3.0" >, "description": "", "main": "index.js", "scripts": < "check-version" : "node checkVersion.js", "start-server" : "node app.js" "start" : "npm run check-version && npm run start-server", "test": "npm run check-version && echo \"Error: no test specified\" && exit 1" >, "author": "", "license": "ISC", "dependencies": < "bluebird": "^3.5.1", "express": "^4.16.3", "good-guy-http": "^1.10.3", "semver": "^5.5.0" >> 

Do run npm install command before you run npm run start command to run your project.

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How to Check Node Version? [Check Node JS Version]

Are looking to install the latest node js version to have better productivity, This article will guide you on how to check node version and how to install node on various OS.

List of content you will read in this article:

Node.js is a widely adopted platform built on JavaScript runtime, allowing you to efficiently create scalable and web-based interactive applications. Node.js works on an event-driven and non-blocking I/O architecture, making it lightweight and perfect for creating data-intensive, real-time applications running on distributed systems. This article will give you a complete brief and step-by-step guide through which you can find how to check Node version [get Node version], i.e. that can be installed on different platforms. Let’s get started!

What is Node.js?

Node.js was developed as a server-side platform by Ryan Dahl in 2009. It’s only been 12 years and has gained popularity within no time. This software is designed to help create web-based servers and networking tools with JavaScript and various modules. It is capable of handling numerous core functionalities. It offers multiple modules that help in reducing the complications while writing the server applications using its APIs. Node.js is compatible with macOS, Windows, and Linux systems.

It has been significantly less time since this software has managed to attract large enterprises. Some major companies that rely on Node.js are Groupon, Netflix, IBM, Voxer, SAP, etc.

How to Check Node Version? [Check Node.js Vesion]

Node.js is a cross-platform software that can be installed on various platforms. Over time, it has multiple versions with advanced tools and technology. You can install and check Nodejs version on Linux, macOS, and Windows operating systems.

Here you will learn how to check node version installed in your operating system, along with the installation guide for Linux, Windows, and macOS.

How to check node.js version on Linux with the installation guide?

We are considering Ubuntu as a Linux distro here. You can easily find Node.js within Ubuntu’s repository and use commands for installation. Follow the below-mentioned steps to check the node version on Linux VPS too:

Step 1: Press ctrl+alt+t to open the terminal on your system and run this node command to install Node.js.

Step 2: After installing the Node.js, check node version that you have installed with the help of the following node version command.

Step 3: It is strictly recommended that you install the Node package manager with Node.js. Npm offers you the open-source library of the Node.js packages. For installing NPM, use these commands.

sudo apt install npm
npm -v or npm –version

How to check Node version on windows with the installation guide?

To install Node.js on your Windows system, you need administrative rights on your user account and command line. Follow the below-mentioned steps if you want to install and check Node.js’ version of Node.js in Windows.

Step 1: Navigate to the official download site of Node.js and select the Windows installer button. It will start the download for the latest version by default. The NPM installer comes with an NPM package manager.

Step 2: After the completion of the download process, launch the installer. Open the directory where you store your download files.

Step 3: You will be asked if you want to run the software to confirm and click Run.

Step 4: You will be entered in the Node.js setup wizard and click on Next.

Step 5: You will be asked to accept the license, click Next after agreeing on the terms and conditions, and start installing the software.

Step 6: You will be asked for the software’s location, and you can leave the default location or fill in the required path and click Next.

Step 7: Next, select the components you want and do not wish to include accordingly and click Next.

Step 8: At last, you can click on the Install option to run the installer and click on Finish.

Run the following command on the command prompt, and you can verify the installed version of Node.js.

How to check node.js version on Mac and the installation guide?

You can go through the following steps for installing Node.js on macOS.

Step 1: Go to the official download page for Node.js and select macOS.

Step 2: Start running the download Node.js .pkg installer.

Step 3: Once the download process is complete, you can start running the installer, accepting all the details, and clicking installs to finish the procedure.

Step 4: Once the installation process is completed, you can find Node version, i.e., installed in your system.

Run the following nodejs get version command to check the version of Node.js.

Benefits of Node.js

Below are various benefits offered by Node.js:

1. Robust Technology Stack

After JavaScript, Node.js has become a robust stand-alone name in the programming field. It has experienced more than 368,985,988 downloads and over 750 contributors and is still growing. If you are using Node.js for backend development, you will automatically get all the advantages of full-stack development.

• It offers better efficiency for improving the developer’s productivity.
• You can share and reuse the code.
• It helps in enhancing the speed and performance of your project development.
• It allows you to collaborate with your team efficiently for better productivity.
• It provides you with a wide range of free tools.
• It makes your team more flexible and requires less time in development.
• It helps the developers to start server-side programming with minimum effort.

2. Perfect for Microservices

Node.js is a lightweight tool, making it suitable for microservices architecture. It allows you to break application logic into smaller modules rather than building a single and large monolithic core. It ensures better flexibility and scalability for the development process. It also helps you add more microservices to the existing ones rather than add more features using the basic application functionality.

3. Rich Ecosystem

Node.js comes with npm, which provides a marketplace for open-source JavaScript tools and helps advance this technology. Node.js has a wide range of libraries and still adding over time, providing a rich ecosystem. Today, about 97 percent of advanced web-based applications use npm modules, proving its unstoppable contribution to extensive development.

Due to its rich ecosystem, there is considerable potential for the growth of Node.js as technology helps create new solutions without investing in the development process.

4. Strong Corporate Support

After Joyent supported the development of Node.js, it created the Node.js foundation in 2015. It helps in adopting and accelerating Node.js development. Many major companies, like IBM, PayPal, SAP, etc., have become the organization’s founding members. With time, many companies are adopting Node.js. Also, there are very few open-source projects that have strong corporate support.

Drawbacks of Node.js

1. Performance Bottlenecks

When using Node.js, you may face some drawbacks, like the inability to process CPU-bound tasks efficiently. To understand the root cause of the problem, you need to have a bit of context about the situation.

Everyone knows that we use Node.js as a runtime environment that helps execute the JavaScript on the server side. JavaScript is a front-end programming language that allows you to quickly use a single thread for processing the task. It will not require threading for working as all the tasks in JavaScript are lightweight and consume little CPU, which may lead to bottlenecks if multiple tasks are handled.

If we consider Node.js, the main problem occurs when it receives a CPU-bound task. Once it gets a heavy task, it will set all the CPU available for processing it first and later answer the other queued request. It will result in slow processing and delay in the event loop process, making Node.js unsuitable for handling heavy computation.

2. Immature Tools

However, Node.js consists of stable and mature modules, but numerous tools are available in the npm registry that is of poor quality and stored without being tested. It does not have a structured registry for offering tools based on their rating and quality. It makes it a challenging situation for finding the best solution for your purposes without understanding the need for it.

Node.js ecosystem is open-source, and Joyent is supervising the quality. Still, there might be a possibility that the remaining tools lack quality standards set by the global organization.

Conclusion

Node.js has been widely popular due to its various benefits for creating web-based and interactive websites. However, it has multiple versions, and you can choose any, but most prefer to use the latest node js version to experience better tools and functionality. We have explained a guide to You can learn how to install Node JS and the steps you must follow to check the node js version. You can install Node.js on any platform quickly and seamlessly, following straightforward steps.

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