Node.js os.release() Method

The os.release() method is an inbuilt application programming interface of the os module which is used to get Operating system release.

Syntax:

os.release()

Parameters: This method does not accept any parameters.
Return Value: This method returns a string that represents operating system release. 

Below examples illustrate the use of os.release() method in Node.js:

Example 1:

Javascript

// Node.js program to demonstrate the
// os.release() method

// Allocating os module
const os = require('os');

// Printing os.release() value
console.log(os.release());

Output: On windows system 

10.0.17763

Output: On Linux system 

3.10.0-1062.1.1.el7.x86_64

Example 2:

Javascript

// Node.js program to demonstrate the
// os.release() method

// Allocating os module
const os = require('os');

// Printing os.platform() value
var platform = os.platform();
switch(platform) {
    case 'aix':
        console.log("IBM AIX platform");
        break;
    case 'darwin':
        console.log("Darwin platform(MacOS, IOS etc)");
        break;
    case 'freebsd':
        console.log("FreeBSD Platform");
        break;
    case 'linux':
        console.log("Linux Platform");
        break;
    case 'openbsd':
        console.log("OpenBSD platform");
        break;
    case 'sunos':
        console.log("SunOS platform");
        break;
    case 'win32':
        console.log("Windows platform");
        break;
    default:
        console.log("Unknown platform");
}

// Printing version
console.log("Version: " + os.release());

Output:

Windows platform
Version: 10.0.17763

Note: The above program will compile and run by using the node index.js command.

Reference: https://nodejs.org/api/os.html#os_os_release