OS
Learn about the OS module in Node.js.
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The os module is a very nifty little module that allows us to get information about the OS. While it has a lot of operating system-related utility methods and properties, we will just look at a few common ones. Run the code below and see if you understand what each output means.
const os = require('os');console.log("Architecture:", os.arch(), "\n")console.log("CPUs:", os.cpus(), "\n")console.log("Network interfaces:", os.networkInterfaces(), "\n")console.log("Platform:", os.platform(), "\n")console.log("Release number:", os.release(), "\n")console.log("User info:", os.userInfo(), "\n")
Too much information?
Don’t feel overwhelmed by everything that was printed in the output; we’ll explain everything.
| Methods | Explanation |
|---|---|
os.arch() |
Returns the operating system CPU architecture |
os.cpus() |
Returns an array of objects containing information about each logical CPU core |
os.networkInterfaces() |
Returns an object containing network interfaces that have been assigned a network address |
os.platform() |
Returns a string identifying the operating system platform |
os.release() |
Returns a string that identifies the operating system release number |
os.userInfo() |
Returns information about the current user |
Depending on how much you have interacted with a similar module in a different language, or perhaps, the command line terminal, these commands may either seem self-explanatory or downright confusing. The purpose of this introductory course is to get you familiarized with the different modules that Node.js has to offer; you may not even use or come across some of these. The os module is rarely used, but now you know that it’s available if you need it.
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