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This article is about how to use Node.js to check the operating system and its version number. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Get the operating system

It is very simple to judge the operating system in Node.js. A string identifying the operating system platform can be returned with process.platform. The possible values are:

Aix

Darwin

Freebsd

Linux

Openbsd

Sunos

Win32

In addition to this method, it can also be obtained using the os.platform () method of the os module, and the result is the same. [recommended: "nodejs tutorial"]

Get the Windows system version number

After knowing the operating system, we also want to get its version number. For example, if the user is windows, I want to know whether he is using win7 or win10. What should we do at this time? You still need to use the os.release () method of the os module to get it, and the format is as follows:

10.0.18363

The format is major.minor.build, and the corresponding relationship of each version is as follows:

Version major.minor-Windows 10, Windows Server 2016 10.0 Windows 8.1, Windows Server 2012 R2 6.3 Windows 8, Windows Server 2012 6.2 Windows 7 Windows Server 2008 R2 6.1 Windows Vista, Windows Server 2008 6.0 Windows XP Professional x64 Edition, 5.2 Windows Server 2003, Windows Home Server Windows XP 5.1 Windows 2000 5.0

For a more detailed introduction, please refer to the official documentation. Here is a code that shows how to determine win7 or win7 and the following:

Const os = require ('os') const semver = require (' semver') const platform = os.platform () const isWindows = platform = = 'win32'const release = os.release () const isWin7 = isWindows & & release.startsWith (' 6.1') const win7orOlder = isWindows & & semver.lte ('6.1') get the Mac system version number

But on Mac, the result of os.release () is not correct, for example, my Mac version is 11.1, but os.release () returns 20.2.0, if the Mac version is 11.5, it returns 20.5.0, so you can't get it in this way. However, there is a command sw_vers on Mac. The result of running it on the terminal is as follows:

$sw_versProductName: macOSProductVersion: 11.4BuildVersion: 20F71

You can see that the ProductVersion line shows the exact version number, which can be extracted with the following command:

$sw_vers-productVersion11.4

Here comes the code:

Const {execSync} = require ('child_process') const macVersion = execSync (' sw_vers-productVersion', {encoding: 'utf-8'})

For the version number correspondence on Mac, please refer to the official documentation.

Thank you for reading! This is the end of the article on "how to use Node.js to check the operating system and its version number". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, you can share it out for more people to see!

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