OS Information

Node includes the os module, which contains a bunch of details that a node program can use to get info about the operating system.
Here's a few details:

const { 
  arch,
  cpus,
  freemem,
  hostname, 
  homedir, 
  platform,
  tmpdir,
  totalmem,
  type,
  uptime,
  userInfo 
} = require('os')

console.log({
  arc: arch(),
  cpus: cpus(),
  freemem: freemem(),
  hostname: hostname(), 
  homedir: homedir(), 
  tmpdir: tmpdir(),
  totalmem: totalmem(),
  platform: platform(),
  type: type(),
  uptime: uptime(),
  userInfo: userInfo()
})

arch

The os CPU architecture (i.e on a mac m1 it returs "arm64").

cpus

An array of objects, where each object represents info about one of the cpus of the machine: model, speed (in MHz), and a few pieces of "time" data about the cpu.

freemem

available memory by the system. Note this is not the "total" memory, which can be produced by totalmem.

hostname

the hostname of the os

homedir

the current user's home directory path.

tmpdir

the path of the OS's default storage location of temporary files

totalmem

The total amount of memory that the system has.

platform

The os platform where the "node binary was compiled". On my mac this returns darwin.

type

the os name (maybe similar to platform). On a mac this returns Darwin.

uptime

The total amount of time, in seconds, that the system has be "up" or running.

userinfo

info about the current user:

{
  uid: 501,
  gid: 20,
  username: 'Me',
  homedir: '/Users/Me',
  shell: '/bin/bash'
}