systeminformation

System and OS information library for node.js
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The Systeminformation Project

This is amazing. Started as a small project just for myself, it now has > 15,000 lines of code, > 600 versions published, up to 8 mio downloads per month, > 300 mio downloads overall. #1 NPM ranking for backend packages. Thank you to all who contributed to this project!

Please support this project ... ☕️

Over the past few years I spent more than 2.000 hours working on this project and invested in hardware to be able to test on different platforms. Currently I am working very hard on the next new version 6.0 completely rewritten in TypeScript and with a lot of new features. Any support is highly appreciated - Buy me a coffee.

Your contribution make it possible for me to keep working on this project, add new features and support more platforms. Thank you in advance!

New Version 5.0

The new Version 5 is here - this next major version release 5.0 comes with new functionality and several improvements and changes (some of them are breaking changes!):

added audio: get detailed audio device information
added bluetooth: get detailed bluetooth device information
added dockerImages, dockerVolumes: get detailed information about docker images and volumes
added printer: get information from detected printers
added usb: get detailed usb controller and device information
added wifi interfaces and connections: extended wifi information
better uuid function to get unique hardware and OS UUIDs
better/extended cpu info detection
better/extended system info detection
Apple Silicon M1/M2/M3 support
better Raspberry-PI detection
systeminformation website updated and extended with full documentation and examples systeminformation.io
lot of minor improvements

Breaking Changes in version 5: you will see several breaking changes for the sake of a more consistent API interface and to be future proof. Read the detailed version 5 changes.

I did a lot of testing on different platforms and machines but of course there might be some issues that I am not aware of. I would be happy if you inform me when you discover any issues. Issues can be opened here.

Quick Start

Lightweight collection of 50+ functions to retrieve detailed hardware, system and OS information.

simple to use
get detailed information about system, cpu, baseboard, battery, memory, disks/filesystem, network, docker, software, services and processes
supports Linux, macOS, partial Windows, FreeBSD, OpenBSD, NetBSD, SunOS and Android support
no npm dependencies

Attention: this is a node.js library. It is supposed to be used as a backend/server-side library and will definitely not work within a browser.

Installation

npm install systeminformation --save

or simpler

npm i systeminformation

Give it a try with `npx`?

You just want to give it a try - right from your command line without installing it? Here is how you can call it with npx:

# get basic system info (System, OS, CPU)
npx systeminformation info

# obtain all static data - may take up to 30 seconds
npx systeminformation

Still need Version 4?

If you need version 4 (for compatibility reasons), you can install version 4 (latest release) like this

npm install systeminformation@4 —save

or simpler

npm install systeminformation@4

Usage

All functions (except version and time) are implemented as asynchronous functions. Here a small example how to use them:

const si = require('systeminformation');

// promises style - new since version 3
si.cpu()
  .then(data => console.log(data))
  .catch(error => console.error(error));

News and Changes

Latest Activity

(last 7 major and minor version releases)

Version 5.23.0: usb() added serial number (linux)
Version 5.22.0: wifiConnections() added signal quality
Version 5.21.0: graphics() added subVendor (linux)
Version 5.20.0: mem() added writeback and dirty (linux)
Version 5.19.0: currentLoad() added steal and guest time (linux)
Version 5.18.0: fsSize() added optional drive parameter
Version 5.17.0: graphics() added positionX, positionY (macOS)
Version 5.16.0: fsSize() added rw property
Version 5.15.0: blockDevices() added device
Version 5.14.0: blockDevices() added raid group member (linux)
Version 5.13.0: networkConnections() added process name (macOS)
Version 5.12.0: cpu() added performance and efficiency cores
Version 5.11.0: networkInterfaces() added default property and default parameter
Version 5.10.0: basic android support
Version 5.9.0: graphics() added properties (macOS)
Version 5.8.0: disksIO() added waitTime, waitPercent (linux)
Version 5.7.0: diskLayout() added S.M.A.R.T for Windows (if installed)
Version 5.6.0: cpuTemperature() added socket and chipset temp (linux)
Version 5.5.0: dockerVolumes() added
Version 5.4.0: dockerImages() added
Version 5.3.0: osInfo() added remoteSession (win only)
Version 5.2.0: wifiInterfaces() and wifiConnections() added
Version 5.1.0: memLayout() added ECC flag, bios() added language, features (linux)
Version 5.0.0: new version 5 - attention there are some breaking changes. See detailed version 5 changes here.
...

You can find all changes here: detailed changelog

Core concept

Node.js comes with some basic OS information, but I always wanted a little more. So I came up to write this little library. This library is still a work in progress. It is supposed to be used as a backend/server-side library (it will definitely not work within a browser). It requires node.js version 4.0 and above.

I was able to test it on several Debian, Raspbian, Ubuntu distributions as well as macOS (Mavericks, Yosemite, El Captain, Sierra, High Sierra, Mojave, Catalina, Big Sur) and some Windows 7, Windows 8, Windows 10, FreeBSD, OpenBSD, NetBSD and SunOS machines. Not all functions are supported on all operating systems. Have a look at the function reference in the docs to get further details.

If you have comments, suggestions & reports, please feel free to contact me!

I also created a nice little command line tool called mmon (micro-monitor) for Linux and macOS, also available via github and npm

Reference

Function Reference and OS Support

Full function reference with examples can be found at https://systeminformation.io.

1. General

Function	Result object	Linux	BSD	Mac	Win	Sun	Comments
si.version()	: string	X	X	X	X	X	lib version (no callback/promise)
si.time()	{...}	X	X	X	X	X	(no callback/promise)
	current	X	X	X	X	X	local (server) time
	uptime	X	X	X	X	X	uptime in number of seconds
	timezone	X	X	X	X	X	e.g. GMT+0200
	timezoneName	X	X	X	X	X	e.g. CEST

2. System (HW)

Function	Result object	Linux	BSD	Mac	Win	Comments
si.system(cb)	{...}	X	X	X	X	hardware information
	manufacturer	X	X	X	X	e.g. 'MSI'
	model	X	X	X	X	model/product e.g. 'MS-7823'
	version	X	X	X	X	version e.g. '1.0'
	serial	X	X	X	X	serial number
	uuid	X	X	X	X	UUID
	sku	X	X	X	X	SKU number
	virtual	X	X		X	is virtual machine
	virtualHost	X	X		X	virtual host (if virtual)
	raspberry	X				optional raspberry revision data
si.bios(cb)	{...}	X	X	X	X	bios information
	vendor	X	X	X	X	e.g. 'AMI'
	version	X	X	X	X	version
	releaseDate	X	X		X	release date
	revision	X	X		X	revision
	serial	X			X	serial
si.baseboard(cb)	{...}	X	X	X	X	baseboard information
	manufacturer	X	X	X	X	e.g. 'ASUS'
	model	X	X	X	X	model / product name
	version	X	X	X	X	version
	serial	X	X	X	X	serial number
	assetTag	X	X	X	X	asset tag
	memMax	X		X	X	max memory in bytes
	memSlots	X		X	X	memory slots on baseboard
si.chassis(cb)	{...}	X	X	X	X	chassis information
	manufacturer	X	X	X	X	e.g. 'MSI'
	model	X	X	X	X	model / product name
	type	X	X	X	X	model / product name
	version	X	X	X	X	version
	serial	X	X	X	X	serial number
	assetTag	X	X	X	X	asset tag
	sku				X	SKU number

3. CPU

Function	Result object	Linux	BSD	Mac	Win	Sun	Comments
si.cpu(cb)	{...}	X	X	X	X		CPU information
	manufacturer	X	X	X	X		e.g. 'Intel(R)'
	brand	X	X	X	X		e.g. 'Core(TM)2 Duo'
	speed	X	X	X	X		in GHz e.g. '3.40'
	speedMin	X		X	X		in GHz e.g. '0.80'
	speedMax	X	X	X	X		in GHz e.g. '3.90'
	governor	X					e.g. 'powersave'
	cores	X	X	X	X		# cores
	physicalCores	X	X	X	X		# physical cores
	efficiencyCores	X		X			# efficiency cores
	performanceCores	X		X			# performance cores
	processors	X	X	X	X		# processors
	socket	X	X		X		socket type e.g. "LGA1356"
	vendor	X	X	X	X		vendor ID
	family	X	X	X	X		processor family
	model	X	X	X	X		processor model
	stepping	X	X	X	X		processor stepping
	revision	X		X	X		revision
	voltage		X				voltage
	flags	X	X	X	X		CPU flags
	virtualization	X	X	X	X		virtualization supported
	cache	X	X	X	X		cache in bytes (object)
	cache.l1d	X	X	X	X		L1D (data) size
	cache.l1i	X	X	X	X		L1I (instruction) size
	cache.l2	X	X	X	X		L2 size
	cache.l3	X	X	X	X		L3 size
si.cpuFlags(cb)	: string	X	X	X	X		CPU flags
si.cpuCache(cb)	{...}	X	X	X	X		CPU cache sizes
	l1d	X	X	X	X		L1D size
	l1i	X	X	X	X		L1I size
	l2	X	X	X	X		L2 size
	l3	X	X	X	X		L3 size
si.cpuCurrentSpeed(cb)	{...}	X	X	X	X	X	current CPU speed (in GHz)
	avg	X	X	X	X	X	avg CPU speed (all cores)
	min	X	X	X	X	X	min CPU speed (all cores)
	max	X	X	X	X	X	max CPU speed (all cores)
	cores	X	X	X	X	X	CPU speed per core (array)
si.cpuTemperature(cb)	{...}	X	X	X*	X		CPU temperature in C (if supported)
	main	X	X	X	X		main temperature (avg)
	cores	X	X	X	X		array of temperatures
	max	X	X	X	X		max temperature
	socket	X					array socket temperatures
	chipset	X					chipset temperature

4. Memory

Function	Result object	Linux	BSD	Mac	Win	Sun	Comments
si.mem(cb)	{...}	X	X	X	X	X	Memory information (in bytes)
	total	X	X	X	X	X	total memory in bytes
	free	X	X	X	X	X	not used in bytes
	used	X	X	X	X	X	used (incl. buffers/cache)
	active	X	X	X	X	X	used actively (excl. buffers/cache)
	buffcache	X	X	X		X	used by buffers+cache
	buffers	X					used by buffers
	cached	X					used by cache
	slab	X					used by slab
	available	X	X	X	X	X	potentially available (total - active)
	swaptotal	X	X	X	X	X
	swapused	X	X	X	X	X
	swapfree	X	X	X	X	X
	writeback	X
	dirty	X
si.memLayout(cb)	[{...}]	X	X	X	X		Memory Layout (array)
	[0].size	X	X	X	X		size in bytes
	[0].bank	X	X		X		memory bank
	[0].type	X	X	X	X		memory type
	[0].clockSpeed	X	X	X	X		clock speed
	[0].formFactor	X	X		X		form factor
	[0].manufacturer	X	X	X	X		manufacturer
	[0].partNum	X	X	X	X		part number
	[0].serialNum	X	X	X	X		serial number
	[0].voltageConfigured	X	X		X		voltage conf.
	[0].voltageMin	X	X		X		voltage min
	[0].voltageMax	X	X		X		voltage max

5. Battery

Function	Result object	Linux	BSD	Mac	Win	Comments
si.battery(cb)	{...}	X	X	X	X	battery information
	hasBattery	X	X	X	X	indicates presence of battery
	cycleCount	X		X		numbers of recharges
	isCharging	X	X	X	X	indicates if battery is charging
	designedCapacity	X		X	X	max capacity of battery (mWh)
	maxCapacity	X		X	X	max capacity of battery (mWh)
	currentCapacity	X		X	X	current capacity of battery (mWh)
	capacityUnit	X		X	X	capacity unit (mWh)
	voltage	X		X	X	current voltage of battery (V)
	percent	X	X	X	X	charging level in percent
	timeRemaining	X		X		minutes left (if discharging)
	acConnected	X	X	X	X	AC connected
	type	X		X		battery type
	model	X		X		model
	manufacturer	X		X		manufacturer
	serial	X		X		battery serial

See known issues if you have a problem with macOS temperature or windows temperature

6. Graphics

Function	Result object	Linux	Mac	Win	Comments
si.graphics(cb)	{...}	X	X	X	arrays of graphics controllers and displays
	controllers[]	X	X	X	graphics controllers array
	...[0].vendor	X	X	X	e.g. NVIDIA
	...[0].subVendor	X			e.g. Gigabyte
	...[0].vendorId		X		vendor ID
	...[0].model	X	X	X	graphics controller model
	...[0].deviceId		X		device ID
	...[0].bus	X	X	X	on which bus (e.g. PCIe)
	...[0].vram	X	X	X	VRAM size (in MB)
	...[0].vramDynamic	X	X	X	true if dynamically allocated ram
	...[0].external		X		is external GPU
	...[0].cores		X		Apple silicon only
	...[0].metalVersion		X		Apple Metal Version
	displays[]	X	X	X	monitor/display array
	...[0].vendor			X	monitor/display vendor
	...[0].vendorId		X		vendor ID
	...[0].deviceName			X	e.g. \\.\DISPLAY1
	...[0].model	X	X	X	monitor/display model
	...[0].productionYear		X		production year
	...[0].serial		X		serial number
	...[0].displayId		X		display ID
	...[0].main	X	X	X	true if main monitor
	...[0].builtin	X	X		true if built-in monitor
	...[0].connection	X	X	X	e.g. DisplayPort or HDMI
	...[0].sizeX	X		X	size in mm horizontal
	...[0].sizeY	X		X	size in mm vertical
	...[0].pixelDepth	X	X	X	color depth in bits
	...[0].resolutionX	X	X	X	pixel horizontal
	...[0].resolutionY	X	X	X	pixel vertical
	...[0].currentResX	X	X	X	current pixel horizontal
	...[0].currentResY	X	X	X	current pixel vertical
	...[0].positionX		X	X	display position X
	...[0].positionY		X	X	display position Y
	...[0].currentRefreshRate	X	X	X	current screen refresh rate

7. Operating System

Function	Result object	Linux	BSD	Mac	Win	Sun	Comments
si.osInfo(cb)	{...}	X	X	X	X	X	OS information
	platform	X	X	X	X	X	'linux', 'darwin', 'Windows', ...
	distro	X	X	X	X	X
	release	X	X	X	X	X
	codename	X		X
	kernel	X	X	X	X	X	kernel release - same as os.release()
	arch	X	X	X	X	X	same as os.arch()
	hostname	X	X	X	X	X	same as os.hostname()
	fqdn	X	X	X	X	X	FQDN fully qualified domain name
	codepage	X	X	X	X		OS build version
	logofile	X	X	X	X	X	e.g. 'apple', 'debian', 'fedora', ...
	serial	X	X	X	X		OS/Host serial number
	build	X		X	X		OS build version
	servicepack				X		service pack version
	uefi	X	X	X	X		OS started via UEFI
	hypervisor				X		hyper-v enabled? (win only)
	remoteSession				X		runs in remote session (win only)
si.uuid(cb)	{...}	X	X	X	X	X	object of several UUIDs
	os	X	X	X	X		os specific UUID
	hardware	X	X	X	X		hardware specific UUID
	macs	X	X	X	X		MAC addresses
si.versions(apps, cb)	{...}	X	X	X	X	X	version information (kernel, ssl, node, ...) apps param is optional for detecting only specific apps/libs (string, comma separated)
si.shell(cb)	: string	X	X	X	X		standard shell
si.users(cb)	[{...}]	X	X	X	X	X	array of users online
	[0].user	X	X	X	X	X	user name
	[0].tty	X	X	X	X	X	terminal
	[0].date	X	X	X	X	X	login date
	[0].time	X	X	X	X	X	login time
	[0].ip	X	X	X		X	ip address (remote login)
	[0].command	X	X	X		X	last command or shell

8. Current Load, Processes & Services

Function	Result object	Linux	BSD	Mac	Win	Sun	Comments
si.currentLoad(cb)	{...}	X		X	X	X	CPU-Load
	avgLoad	X		X		X	average load
	currentLoad	X		X	X	X	CPU load in %
	currentLoadUser	X		X	X	X	CPU load user in %
	currentLoadSystem	X		X	X	X	CPU load system in %
	currentLoadNice	X		X	X	X	CPU load nice in %
	currentLoadIdle	X		X	X	X	CPU load idle in %
	currentLoadIrq	X		X	X	X	CPU load system in %
	rawCurrentLoad...	X		X	X	X	CPU load raw values (ticks)
	cpus[]	X		X	X	X	current loads per CPU in % + raw ticks
si.fullLoad(cb)	: integer	X		X	X		CPU full load since bootup in %
si.processes(cb)	{...}	X	X	X	X	X	# running processes
	all	X	X	X	X	X	# of all processes
	running	X	X	X		X	# of all processes running
	blocked	X	X	X		X	# of all processes blocked
	sleeping	X	X	X		X	# of all processes sleeping
	unknown				X		# of all processes unknown status
	list[]	X	X	X	X	X	list of all processes incl. details
	...[0].pid	X	X	X	X	X	process PID
	...[0].parentPid	X	X	X	X	X	parent process PID
	...[0].name	X	X	X	X	X	process name
	...[0].cpu	X	X	X	X	X	process % CPU usage
	...[0].cpuu	X	X		X		process % CPU usage (user)
	...[0].cpus	X	X		X		process % CPU usage (system)
	...[0].mem	X	X	X	X	X	process memory %
	...[0].priority	X	X	X	X	X	process priority
	...[0].memVsz	X	X	X	X	X	process virtual memory size
	...[0].memRss	X	X	X	X	X	process mem resident set size
	...[0].nice	X	X	X		X	process nice value
	...[0].started	X	X	X	X	X	process start time
	...[0].state	X	X	X	X	X	process state (e.g. sleeping)
	...[0].tty	X	X	X		X	tty from which process was started
	...[0].user	X	X	X		X	user who started process
	...[0].command	X	X	X	X	X	process starting command
	...[0].params	X	X	X		X	process params
	...[0].path	X	X	X	X	X	process path
	proc	X	X	X	X		process name
	pid	X	X	X	X		PID
	pids	X	X	X	X		additional pids
	cpu	X	X	X	X		process % CPU
	mem	X	X	X	X		process % MEM
si.services('mysql, apache2', cb)	[{...}]	X	X	X	X		pass comma separated string of services pass "*" for ALL services (linux/win only)
	[0].name	X	X	X	X		name of service
	[0].running	X	X	X	X		true / false
	[0].startmode				X		manual, automatic, ...
	[0].pids	X	X	X	X		pids
	[0].cpu	X	X	X			process % CPU
	[0].mem	X	X	X			process % MEM
si.processLoad('mysql, apache2', cb)	[{...}]	X	X	X	X		pass comma separated string of processes pass "*" for ALL processes (linux/win only)
	[0].proc	X	X	X	X		name of process
	[0].pids	X	X	X	X		pids
	[0].cpu	X	X	X			process % CPU
	[0].mem	X	X	X			process % MEM

9. File System

Function	Result object	Linux	BSD	Mac	Win	Comments
si.diskLayout(cb)	[{...}]	X		X	X	physical disk layout (array)
	[0].device	X		X		e.g. /dev/sda
	[0].type	X		X	X	HD, SSD, NVMe
	[0].name	X		X	X	disk name
	[0].vendor	X			X	vendor/producer
	[0].size	X		X	X	size in bytes
	[0].bytesPerSector				X	bytes per sector
	[0].totalCylinders				X	total cylinders
	[0].totalHeads				X	total heads
	[0].totalSectors				X	total sectors
	[0].totalTracks				X	total tracks
	[0].tracksPerCylinder				X	tracks per cylinder
	[0].sectorsPerTrack				X	sectors per track
	[0].firmwareRevision	X		X	X	firmware revision
	[0].serialNum	X		X	X	serial number
	[0].interfaceType	X		X	X	SATA, PCIe, ...
	[0].smartStatus	X		X	X	S.M.A.R.T Status (see Known Issues)
	[0].temperature	X				S.M.A.R.T temperature
	[0].smartData	X			X	full S.M.A.R.T data from smartctl requires at least smartmontools 7.0
si.blockDevices(cb)	[{...}]	X		X	X	returns array of disks, partitions, raids and roms
	[0].name	X		X	X	name
	[0].type	X		X	X	type
	[0].fstype	X		X	X	file system type (e.g. ext4)
	[0].mount	X		X	X	mount point
	[0].size	X		X	X	size in bytes
	[0].physical	X		X	X	physical type (HDD, SSD, CD/DVD)
	[0].uuid	X		X	X	UUID
	[0].label	X		X	X	label
	[0].model	X		X		model
	[0].serial	X			X	serial
	[0].removable	X		X	X	serial
	[0].protocol	X		X		protocol (SATA, PCI-Express, ...)
	[0].group	X				Raid group member (e.g. md1)
	[0].device	X		X	X	physical device mapped to (e.g. /dev/sda)
si.disksIO(cb)	{...}	X		X		current transfer stats
	rIO	X		X		read IOs on all mounted drives
	wIO	X		X		write IOs on all mounted drives
	tIO	X		X		write IOs on all mounted drives
	rIO_sec	X		X		read IO per sec (* see notes)
	wIO_sec	X		X		write IO per sec (* see notes)
	tIO_sec	X		X		total IO per sec (* see notes)
	rWaitTime	X				read IO request time (* see notes)
	wWaitTime	X				write IO request time (* see notes)
	tWaitTime	X				total IO request time (* see notes)
	rWaitPercent	X				read IO request time percent (* see notes)
	wWaitPercent	X				write IO request time percent (* see notes)
	tWaitPercent	X				total IO request time percent (* see notes)
	ms	X		X		interval length (for per second values)
si.fsSize(drive, cb)	[{...}]	X	X	X	X	returns array of mounted file systems drive param is optional
	[0].fs	X	X	X	X	name of file system
	[0].type	X	X	X	X	type of file system
	[0].size	X	X	X	X	sizes in bytes
	[0].used	X	X	X	X	used in bytes
	[0].available	X	X	X	X	used in bytes
	[0].use	X	X	X	X	used in %
	[0].mount	X	X	X	X	mount point
	[0].rw	X	X	X	X	read and write (false if read only)
si.fsOpenFiles(cb)	{...}	X	X	X		count max/allocated file descriptors
	max	X	X	X		max file descriptors
	allocated	X	X	X		current open files count
	available	X	X	X		count available
si.fsStats(cb)	{...}	X		X		current transfer stats
	rx	X		X		bytes read since startup
	wx	X		X		bytes written since startup
	tx	X		X		total bytes read + written since startup
	rx_sec	X		X		bytes read / second (* see notes)
	wx_sec	X		X		bytes written / second (* see notes)
	tx_sec	X		X		total bytes reads + written / second
	ms	X		X		interval length (for per second values)

10. USB

Function	Result object	Linux	BSD	Mac	Win	Comments
si.usb(cb)	[{...}]	X	X	X	X	get detected USB devices
	[0].bus	X				USB bus
	[0].deviceId	X				bus device id
	[0].id	X		X	X	internal id
	[0].name	X		X	X	name
	[0].type	X		X	X	name
	[0].removable			X		is removable
	[0].vendor	X		X		vendor
	[0].manufacturer	X		X	X	manufacturer
	[0].maxPower	X				max power
	[0].default	X		X	X	is default printer
	[0].serialNumber	X		X		serial number

11. Printer

Function	Result object	Linux	BSD	Mac	Win	Comments
si.printer(cb)	[{...}]	X	X	X	X	get printer information
	[0].id	X		X	X	internal id
	[0].name	X		X	X	name
	[0].model	X		X	X	model
	[0].uri	X		X		printer URI
	[0].uuid	X				printer UUID
	[0].status	X		X	X	printer status (e.g. idle)
	[0].local	X		X	X	is local printer
	[0].default			X	X	is default printer
	[0].shared	X		X	X	is shared printer

12. Audio

Function	Result object	Linux	BSD	Mac	Win	Comments
si.audio(cb)	[{...}]	X	X	X	X	get printer information
	[0].id	X		X	X	internal id
	[0].name	X		X	X	name
	[0].manufacturer	X		X	X	manufacturer
	[0].revision	X				revision
	[0].driver	X				driver
	[0].default			X	X	is default
	[0].channel	X		X		channel e.g. USB, HDMI, ...
	[0].type	X		X	X	type e.g. Speaker
	[0].in			X	X	is input channel
	[0].out			X	X	is output channel
	[0].interfaceType	X		X	X	interface type (PCIe, USB, HDMI, ...)
	[0].status	X		X	X	printer status (e.g. idle)

13. Network related functions

Function	Result object	Linux	BSD	Mac	Win	Sun	Comments
si.networkInterfaces(cb)	[{...}]	X	X	X	X	X	array of network interfaces With the 'default' parameter it returns only the default interface
	[0].iface	X	X	X	X	X	interface
	[0].ifaceName	X	X	X	X	X	interface name (differs on Windows)
	[0].default	X	X	X	X	X	true if this is the default interface
	[0].ip4	X	X	X	X	X	ip4 address
	[0].ip4subnet	X	X	X	X	X	ip4 subnet mask
	[0].ip6	X	X	X	X	X	ip6 address
	[0].ip6subnet	X	X	X	X	X	ip6 subnet mask
	[0].mac	X	X	X	X	X	MAC address
	[0].internal	X	X	X	X	X	true if internal interface
	[0].virtual	X	X	X	X	X	true if virtual interface
	[0].operstate	X		X	X		up / down
	[0].type	X		X	X		wireless / wired
	[0].duplex	X		X			duplex
	[0].mtu	X		X			maximum transmission unit
	[0].speed	X		X	X		speed in MBit / s
	[0].dhcp	X		X	X		IP address obtained by DHCP
	[0].dnsSuffix	X			X		DNS suffix
	[0].ieee8021xAuth	X			X		IEEE 802.1x auth
	[0].ieee8021xState	X			X		IEEE 802.1x state
	[0].carrierChanges	X					# changes up/down
si.networkInterfaceDefault(cb)	: string	X	X	X	X	X	get name of default network interface
si.networkGatewayDefault(cb)	: string	X	X	X	X	X	get default network gateway
si.networkStats(ifaces,cb)	[{...}]	X	X	X	X		current network stats of given interfaces iface list: space or comma separated iface parameter is optional defaults to first external network interface, Pass '*' for all interfaces
	[0].iface	X	X	X	X		interface
	[0].operstate	X	X	X	X		up / down
	[0].rx_bytes	X	X	X	X		received bytes overall
	[0].rx_dropped	X	X	X	X		received dropped overall
	[0].rx_errors	X	X	X	X		received errors overall
	[0].tx_bytes	X	X	X	X		transferred bytes overall
	[0].tx_dropped	X	X	X	X		transferred dropped overall
	[0].tx_errors	X	X	X	X		transferred errors overall
	[0].rx_sec	X	X	X	X		received bytes / second (* see notes)
	[0].tx_sec	X	X	X	X		transferred bytes per second (* see notes)
	[0].ms	X	X	X	X		interval length (for per second values)
si.networkConnections(cb)	[{...}]	X	X	X	X		current network network connections returns an array of all connections
	[0].protocol	X	X	X	X		tcp or udp
	[0].localAddress	X	X	X	X		local address
	[0].localPort	X	X	X	X		local port
	[0].peerAddress	X	X	X	X		peer address
	[0].peerPort	X	X	X	X		peer port
	[0].state	X	X	X	X		like ESTABLISHED, TIME_WAIT, ...
	[0].pid	X	X	X	X		process ID
	[0].process	X	X	X			process name
si.inetChecksite(url, cb)	{...}	X	X	X	X	X	response-time (ms) to fetch given URL
	url	X	X	X	X	X	given url
	ok	X	X	X	X	X	status code OK (2xx, 3xx)
	status	X	X	X	X	X	status code
	ms	X	X	X	X	X	response time in ms
si.inetLatency(host, cb)	: number	X	X	X	X	X	response-time (ms) to external resource host parameter is optional (default 8.8.8.8)

14. Wifi

Function	Result object	Linux	Mac	Win	Comments
si.wifiNetworks(cb)	[{...}]	X	X	X	array of available wifi networks
	[0].ssid	X	X	X	Wifi network SSID
	[0].bssid	X	X	X	BSSID (mac)
	[0].mode	X			mode
	[0].channel	X	X	X	channel
	[0].frequency	X	X	X	frequency in MHz
	[0].signalLevel	X	X	X	signal level in dB
	[0].quality	X	X	X	quality in %
	[0].security	X	X	X	array e.g. WPA, WPA-2
	[0].wpaFlags	X	X	X	array of WPA flags
	[0].rsnFlags	X			array of RDN flags
si.wifiInterfaces(cb)	[{...}]	X	X	X	array of detected wifi interfaces
	[0].id	X	X	X	ID
	[0].iface	X	X	X	interface
	[0].model	X	X	X	model
	[0].vendor	X	X	X	vendor
	[0].mac	X	X	X	MAC address
si.wifiConnections(cb)	[{...}]	X	X	X	array of active wifi connections
	[0].id	X	X	X	ID
	[0].iface	X	X	X	interface
	[0].model	X	X	X	model
	[0].ssid	X	X	X	SSID
	[0].bssid	X	(X)	X	BSSID (mac) - macOS only on older os versions
	[0].channel	X	X	X	channel
	[0].frequency	X	X	X	frequency in MHz
	[0].type	X	X	X	e.g. 802.11
	[0].security	X	X	X	array e.g. WPA, WPA-2
	[0].signalLevel	X	X	X	signal level in dB
	[0].quality	X	X	X	quality in %
	[0].txRate	X	X	X	transfer rate MBit/s

15. Bluetooth

Function	Result object	Linux	Mac	Win	Comments
si.bluetoothDevices(cb)	[{...}]	X	X	X	...
	[0].device		X		device name
	[0].name	X	X	X	name
	[0].macDevice	X	X		MAC address device
	[0].macHost	X	X		MAC address host
	[0].batteryPercent		X		battery level percent
	[0].manufacturer		X	X	manufacturer
	[0].type	X	X	X	type of bluetooth device
	[0].connected	X	X		is connected

16. Docker

Function	Result object	Linux	BSD	Mac	Win	Sun	Comments
si.dockerInfo(cb)	{...}	X	X	X	X	X	returns general docker info
	id	X	X	X	X	X	Docker ID
	containers	X	X	X	X	X	number of containers
	containersRunning	X	X	X	X	X	number of running containers
	containersPaused	X	X	X	X	X	number of paused containers
	containersStopped	X	X	X	X	X	number of stopped containers
	images	X	X	X	X	X	number of images
	driver	X	X	X	X	X	driver (e.g. 'devicemapper', 'overlay2')
	memoryLimit	X	X	X	X	X	has memory limit
	swapLimit	X	X	X	X	X	has swap limit
	kernelMemory	X	X	X	X	X	has kernel memory
	cpuCfsPeriod	X	X	X	X	X	has CpuCfsPeriod
	cpuCfsQuota	X	X	X	X	X	has CpuCfsQuota
	cpuShares	X	X	X	X	X	has CPUShares
	cpuSet	X	X	X	X	X	has CPUShares
	ipv4Forwarding	X	X	X	X	X	has IPv4Forwarding
	bridgeNfIptables	X	X	X	X	X	has BridgeNfIptables
	bridgeNfIp6tables	X	X	X	X	X	has BridgeNfIp6tables
	debug	X	X	X	X	X	Debug on
	nfd	X	X	X	X	X	named data networking forwarding daemon
	oomKillDisable	X	X	X	X	X	out-of-memory kill disabled
	ngoroutines	X	X	X	X	X	number NGoroutines
	systemTime	X	X	X	X	X	docker SystemTime
	loggingDriver	X	X	X	X	X	logging driver e.g. 'json-file'
	cgroupDriver	X	X	X	X	X	cgroup driver e.g. 'cgroupfs'
	nEventsListener	X	X	X	X	X	number NEventsListeners
	kernelVersion	X	X	X	X	X	docker kernel version
	operatingSystem	X	X	X	X	X	docker OS e.g. 'Docker for Mac'
	osType	X	X	X	X	X	OSType e.g. 'linux'
	architecture	X	X	X	X	X	architecture e.g. x86_64
	ncpu	X	X	X	X	X	number of CPUs
	memTotal	X	X	X	X	X	memory total
	dockerRootDir	X	X	X	X	X	docker root directory
	httpProxy	X	X	X	X	X	http proxy
	httpsProxy	X	X	X	X	X	https proxy
	noProxy	X	X	X	X	X	NoProxy
	name	X	X	X	X	X	Name
	labels	X	X	X	X	X	array of labels
	experimentalBuild	X	X	X	X	X	is experimental build
	serverVersion	X	X	X	X	X	server version
	clusterStore	X	X	X	X	X	cluster store
	clusterAdvertise	X	X	X	X	X	cluster advertise
	defaultRuntime	X	X	X	X	X	default runtime e.g. 'runc'
	liveRestoreEnabled	X	X	X	X	X	live store enabled
	isolation	X	X	X	X	X	isolation
	initBinary	X	X	X	X	X	init binary
	productLicense	X	X	X	X	X	product license
si.dockerImages(all, cb)	[{...}]	X	X	X	X	X	returns array of top level/all docker images
	[0].id	X	X	X	X	X	image ID
	[0].container	X	X	X	X	X	container ID
	[0].comment	X	X	X	X	X	comment
	[0].os	X	X	X	X	X	OS
	[0].architecture	X	X	X	X	X	architecture
	[0].parent	X	X	X	X	X	parent ID
	[0].dockerVersion	X	X	X	X	X	docker version
	[0].size	X	X	X	X	X	image size
	[0].sharedSize	X	X	X	X	X	shared size
	[0].virtualSize	X	X	X	X	X	virtual size
	[0].author	X	X	X	X	X	author
	[0].created	X	X	X	X	X	created date / time
	[0].containerConfig	X	X	X	X	X	container config object
	[0].graphDriver	X	X	X	X	X	graph driver object
	[0].repoDigests	X	X	X	X	X	repo digests array
	[0].repoTags	X	X	X	X	X	repo tags array
	[0].config	X	X	X	X	X	config object
	[0].rootFS	X	X	X	X	X	root fs object
si.dockerContainers(all, cb)	[{...}]	X	X	X	X	X	returns array of active/all docker containers
	[0].id	X	X	X	X	X	ID of container
	[0].name	X	X	X	X	X	name of container
	[0].image	X	X	X	X	X	name of image
	[0].imageID	X	X	X	X	X	ID of image
	[0].command	X	X	X	X	X	command
	[0].created	X	X	X	X	X	creation time (unix)
	[0].started	X	X	X	X	X	creation time (unix)
	[0].finished	X	X	X	X	X	creation time (unix)
	[0].createdAt	X	X	X	X	X	creation date time string
	[0].startedAt	X	X	X	X	X	creation date time string
	[0].finishedAt	X	X	X	X	X	creation date time string
	[0].state	X	X	X	X	X	created, running, exited
	[0].ports	X	X	X	X	X	array of ports
	[0].mounts	X	X	X	X	X	array of mounts
si.dockerContainerStats(ids, cb)	[{...}]	X	X	X	X	X	statistics for specific containers container IDs: space or comma separated, pass '*' for all containers
	[0].id	X	X	X	X	X	Container ID
	[0].memUsage	X	X	X	X	X	memory usage in bytes
	[0].memLimit	X	X	X	X	X	memory limit (max mem) in bytes
	[0].memPercent	X	X	X	X	X	memory usage in percent
	[0].cpuPercent	X	X	X	X	X	cpu usage in percent
	[0].pids	X	X	X	X	X	number of processes
	[0].netIO.rx	X	X	X	X	X	received bytes via network
	[0].netIO.wx	X	X	X	X	X	sent bytes via network
	[0].blockIO.r	X	X	X	X	X	bytes read from BlockIO
	[0].blockIO.w	X	X	X	X	X	bytes written to BlockIO
	[0].cpuStats	X	X	X	X	X	detailed cpu stats
	[0].percpuStats	X	X	X	X	X	detailed per cpu stats
	[0].memoryStats	X	X	X	X	X	detailed memory stats
	[0].networks	X	X	X	X	X	detailed network stats per interface
si.dockerContainerProcesses(id, cb)	[{...}]	X	X	X	X	X	array of processes inside a container
	[0].pidHost	X	X	X	X	X	process ID (host)
	[0].ppid	X	X	X	X	X	parent process ID
	[0].pgid	X	X	X	X	X	process group ID
	[0].user	X	X	X	X	X	effective user name
	[0].ruser	X	X	X	X	X	real user name
	[0].group	X	X	X	X	X	effective group name
	[0].rgroup	X	X	X	X	X	real group name
	[0].stat	X	X	X	X	X	process state
	[0].time	X	X	X	X	X	accumulated CPU time
	[0].elapsed	X	X	X	X	X	elapsed running time
	[0].nice	X	X	X	X	X	nice value
	[0].rss	X	X	X	X	X	resident set size
	[0].vsz	X	X	X	X	X	virtual size in Kbytes
	[0].command	X	X	X	X	X	command and arguments
si.dockerVolumes(cb)	[{...}]	returns array of all docker volumes
	[0].name	X	X	X	X	X	volume name
	[0].driver	X	X	X	X	X	driver
	[0].labels	X	X	X	X	X	labels object
	[0].mountpoint	X	X	X	X	X	mountpoint
	[0].options	X	X	X	X	X	options
	[0].scope	X	X	X	X	X	scope
	[0].created	X	X	X	X	X	created at
si.dockerAll(cb)	{...}	X	X	X	X	X	list of all containers including their stats and processes in one single array

17. Virtual Box

Function	Result object	Linux	BSD	Mac	Win	Sun	Comments
si.vboxInfo(cb)	[{...}]	X	X	X	X	X	returns array general virtual box info
	[0].id	X	X	X	X	X	virtual box ID
	[0].name	X	X	X	X	X	name
	[0].running	X	X	X	X	X	vbox is running
	[0].started	X	X	X	X	X	started date time
	[0].runningSince	X	X	X	X	X	running since (secs)
	[0].stopped	X	X	X	X	X	stopped date time
	[0].stoppedSince	X	X	X	X	X	stopped since (secs)
	[0].guestOS	X	X	X	X	X	Guest OS
	[0].hardwareUUID	X	X	X	X	X	Hardware UUID
	[0].memory	X	X	X	X	X	Memory in MB
	[0].vram	X	X	X	X	X	VRAM in MB
	[0].cpus	X	X	X	X	X	CPUs
	[0].cpuExepCap	X	X	X	X	X	CPU exec cap
	[0].cpuProfile	X	X	X	X	X	CPU profile
	[0].chipset	X	X	X	X	X	chipset
	[0].firmware	X	X	X	X	X	firmware
	[0].pageFusion	X	X	X	X	X	page fusion
	[0].configFile	X	X	X	X	X	config file
	[0].snapshotFolder	X	X	X	X	X	snapshot folder
	[0].logFolder	X	X	X	X	X	log folder path
	[0].hpet	X	X	X	X	X	HPET
	[0].pae	X	X	X	X	X	PAE
	[0].longMode	X	X	X	X	X	long mode
	[0].tripleFaultReset	X	X	X	X	X	triple fault reset
	[0].apic	X	X	X	X	X	APIC
	[0].x2Apic	X	X	X	X	X	X2APIC
	[0].acpi	X	X	X	X	X	ACPI
	[0].ioApic	X	X	X	X	X	IOAPIC
	[0].biosApicMode	X	X	X	X	X	BIOS APIC mode
	[0].bootMenuMode	X	X	X	X	X	boot menu Mode
	[0].bootDevice1	X	X	X	X	X	bootDevice1
	[0].bootDevice2	X	X	X	X	X	bootDevice2
	[0].bootDevice3	X	X	X	X	X	bootDevice3
	[0].bootDevice4	X	X	X	X	X	bootDevice4
	[0].timeOffset	X	X	X	X	X	time Offset
	[0].rtc	X	X	X	X	X	RTC

16. "Get All / Observe" - functions

Function	Result object	Linux	BSD	Mac	Win	Sun	Comments
si.getStaticData(cb)	{...}	X	X	X	X	X	all static data at once
si.getDynamicData(srv,iface,cb)	{...}	X	X	X	X	X	all dynamic data at once Specify services and interfaces to monitor Defaults to first external network interface Pass "" for ALL services (linux/win only) Pass "" for ALL network interfaces
si.getAllData(srv,iface,cb)	{...}	X	X	X	X	X	all data at once Specify services and interfaces to monitor Defaults to first external network interface Pass "" for ALL services (linux/win only) Pass "" for ALL network interfaces
si.get(valueObject,cb)	{...}	X	X	X	X	X	get partial system info data at once In valueObject you can define all values, you want to get back (see documentation for details)
si.observe(valueObject,interval,cb)	-	X	X	X	X	X	Observe a defined value object call callback on changes polling interval in milliseconds

cb: Asynchronous Function Calls (callback)

Remember: all functions (except version and time) are implemented as asynchronous functions! There are now three ways to consume them:

Callback Style

const si = require('systeminformation');

si.cpu(function(data) {
  console.log('CPU Information:');
  console.log('- manufacturer: ' + data.manufacturer);
  console.log('- brand: ' + data.brand);
  console.log('- speed: ' + data.speed);
  console.log('- cores: ' + data.cores);
  console.log('- physical cores: ' + data.physicalCores);
  console.log('...');
})

Promises

Promises Style is new in version 3.0.

When omitting callback parameter (cb), then you can use all function in a promise oriented way. All functions (except of version and time) are returning a promise, that you can consume:

const si = require('systeminformation');

si.cpu()
  .then(data => {
    console.log('CPU Information:');
    console.log('- manufacturer: ' + data.manufacturer);
    console.log('- brand: ' + data.brand);
    console.log('- speed: ' + data.speed);
    console.log('- cores: ' + data.cores);
    console.log('- physical cores: ' + data.physicalCores);
    console.log('...');
  })
  .catch(error => console.error(error));

Async / Await

Using async / await (available since node v7.6)

Since node v7.6 you can also use the async / await pattern. The above example would then look like this:

const si = require('systeminformation');

async function cpuData() {
  try {
    const data = await si.cpu();
    console.log('CPU Information:');
    console.log('- manufacturer: ' + data.manufacturer);
    console.log('- brand: ' + data.brand);
    console.log('- speed: ' + data.speed);
    console.log('- cores: ' + data.cores);
    console.log('- physical cores: ' + data.physicalCores);
    console.log('...');
  } catch (e) {
    console.log(e)
  }
}

Known Issues

macOS - Temperature Sensor

To be able to measure temperature on macOS I created a little additional package. Due to some difficulties in NPM with optionalDependencies I unfortunately was getting unexpected warnings on other platforms. So I decided to drop this optional dependency for macOS - so by default, you will not get correct values.

This additional package is now also supporting Apple Silicon M1/M2/M3 machines.

But if you need to detect macOS temperature just run the following additional installation command:

$ npm install osx-temperature-sensor --save

systeminformation will then detect this additional library and return the temperature when calling systeminformations standard function cpuTemperature()

Windows Temperature, Battery, ...

get-WmiObject - which is used to determine temperature and battery sometimes needs to be run with admin privileges. So if you do not get any values, try to run it again with according privileges. If you still do not get any values, your system might not support this feature. In some cases we also discovered that get-WmiObject returned incorrect temperature values.

Linux Temperature

In some cases you need to install the Linux sensors package to be able to measure temperature e.g. on DEBIAN based systems by running sudo apt-get install lm-sensors

Linux S.M.A.R.T. Status

To be able to detect S.M.A.R.T. status on Linux you need to install smartmontools. On DEBIAN based Linux distributions you can install it by running sudo apt-get install smartmontools

Windows Encoding Issues

I now reimplemented all windows functions to avoid encoding problems (special chacarters). And as Windows 11 now dropped wmic support, I had to move completely to powershell. Be sure that powershell version 5+ is installed on your machine. On older Windows versions (7, 8) you might still see encoding problems due to the old powershell version.

*: Additional Notes

In fsStats(), disksIO() and networkStats() the results / sec. values (rx_sec, IOPS, ...) are calculated correctly beginning with the second call of the function. It is determined by calculating the difference of transferred bytes / IOs divided by the time between two calls of the function.

The first time you are calling one of these functions, you will get null for transfer rates. The second time, you should then get statistics based on the time between the two calls ...

So basically, if you e.g. need a value for network stats every second, your code should look like this:

const si = require('systeminformation');

setInterval(function() {
  si.networkStats().then(data => {
    console.log(data);
  })
}, 1000)

Beginning with the second call, you get network transfer values per second.

Finding new issues

I am happy to discuss any comments and suggestions. Please feel free to contact me if you see any possibility of improvement!

Comments

If you have ideas or comments, please do not hesitate to contact me.

Happy monitoring!

Sincerely,

Sebastian Hildebrandt, +innovations

Credits

Written by Sebastian Hildebrandt sebhildebrandt

Contributors

Guillaume Legrain glegrain
Riccardo Novaglia richy24
Quentin Busuttil Buzut
lapsio lapsio
csy csy
Tiago Roldão tiagoroldao
dragonjet dragonjet
Adam Reis adamreisnz
Jimi M ItsJimi
Git² GitSquared
weiyin weiyin
Jorai Rijsdijk Erackron
Rasmus Porsager porsager
Nathan Patten nrpatten
Juan Campuzano juancampuzano
Ricardo Polo ricardopolo
Miłosz Dźwigała mily20001
cconley717 cconley717
Maria Camila Cubides MariaCamilaCubides
Aleksander Krasnicki plakak
Alexis Tyler OmgImAlexis
Simon Smith si458

OSX Temperature: credits here are going to:

Frank Stock pcafstockf - for his work on smc-code

Copyright Information

Linux is a registered trademark of Linus Torvalds. Apple, macOS, OS X are registered trademarks of Apple Inc., Windows is a registered trademark of Microsoft Corporation. Node.js is a trademark of Joyent Inc., Intel is a trademark of Intel Corporation, AMD is a trademark of Advanced Micro Devices Inc., Raspberry Pi is a trademark of the Raspberry Pi Foundation, Debian is a trademark owned by Software in the Public Interest, Inc., Ubuntu is a trademark of Canonical Ltd., FreeBSD is a registered trademark of The FreeBSD Foundation, NetBSD is a registered trademark of The NetBSD Foundation, Docker is a trademark of Docker, Inc., Sun, Solaris, OpenSolaris and registered trademarks of Sun Microsystems, VMware is a trademark of VMware Inc, Virtual Box is a trademark of Oracle Corporation, Xen is a registered trademark of Xen Project, QEMU is a trademark of Fabrice Bellard, bochs is a trademark of The Bochs Project, USB and USB Logo are trademarks of USB Implementation Forum, Bluetooth and Bluetooth Logo are trademarks of Bluetooth SIG, Android is a trademark of Google LLC, Parallels is a trademarks of Parallels International GmbH.

All other trademarks are the property of their respective owners.

License

The MIT License (MIT)

Copyright © 2014-2024 Sebastian Hildebrandt, +innovations.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Further details see LICENSE file.

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