How to Findout Your System Information

• This article will teach you how to find out system information, such as
  • Operating System (OS)
  • Serial Number
  • Processor
  • RAM
  • MAC Address

Linux

• Find out Manufacturer, Product Name and Serial Number

[mitesh@Matrix ~]$ sudo dmidecode | grep -A9 'System Information'
System Information
 Manufacturer: Dell Inc.
 Product Name: Latitude 3540
 Version: A06
 Serial Number: DA3YSZ1
 UUID: 4C4B4444-0022-2210-8058-C4C04F535A31
 Wake-up Type: Power Switch
 SKU Number: Latitude 3540
 Family: Not Specified

• Find out Processor information

[mitesh@Matrix ~]$ sudo lscpu  | grep 'Model name'
Model name:            Intel(R) Core(TM) i3-4005U CPU @ 1.70GHz

• Find out RAM information

[mitesh@Matrix ~]$ sudo lshw -c memory
  *-memory
       description: System memory
       physical id: 0
       size: 3865MiB

• Find out WiFi Mac Address

[mitesh@Matrix ~]$ sudo ifconfig wlan0 | grep HWaddr
wlan0     Link encap:Ethernet  HWaddr 64:6a:05:2d:9f:6d

• Find out HDD Space

[mitesh@Matrix ~]$ sudo fdisk -l

Disk /dev/sda: 465.8 GiB, 500107862016 bytes, 976773168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 2740A572-E1AE-4B36-9F4B-2EF58DE8ECC1

Device         Start       End   Sectors   Size Type
/dev/sda1       2048   1050623   1048576   512M EFI System
/dev/sda2    1050624 968562687 967512064 461.4G Linux filesystem
/dev/sda3  968562688 976771071   8208384   3.9G Linux swap

• Find out LAN Mac Address

[mitesh@Matrix ~]$ sudo ifconfig eth0 | grep HWaddr
eth0      Link encap:Ethernet  HWaddr ed:f5:ab:9c:6c:6e

MAC

• Click on Apple Menu 
• Click on About This Mac
• You can see the following information
  • Model Number
  • Processor
  • RAM
  • Serial Number 
• Click on Storage tab
  • HDD Space 
• Click on Memory tab
  • RAM 
• Press Command ⌘ and space key
• Type System Preferences
• Click on Network 
• Find out WiFi Mac Address
  • Select WiFi and click on Advanced 
  • Click on Hardware tab 
• Find out LAN Mac Address
  • Select Ethernet and click on Advanced 
  • Click on Hardware tab 

Windows

• Download and install Belarc Advisor
• Once Belarc Advisor installed, its open a HTML page which contains all your system information.