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dmidecode: Show system information in Linux



If you want to check system information in Linux (without UI), especially Linux server. We will instruct you to use dmidecode command .


Install dmidecode

On CentOS/RHEL:

$ sudo yum install dmidecode

On Ubuntu/Debian:

$ sudo apt update -y
$ sudo apt install -y dmidecode

Check dmidecode version:

$ dmidecode -V
2.11

Show system infromation of server

This command will output Linux server information, such as: Product Name, Manufacturer, Serial Number, UUID.

[user@hostname] $ dmidecode -t1
# dmidecode 2.11
SMBIOS 2.7 present.

Handle 0x0100, DMI type 1, 27 bytes
System Information
    Manufacturer: Dell Inc.
    Product Name: PowerEdge R720xd
    Version: Not Specified.
    Serial Number:
    UUID: 4C4C4544-042XXXXX
    Wake-up Type: Power Switch
    SKU Number: Not Specified
    Family: Not Specified


Show BIOS information


$ dmidecode -t0
OR
$ dmidecode -t bios


Show System Cache information

$ dmidecode -t7
OR
$ dmidecode -t cache




Show RAM information

It can show you about RAM: speed (bus), type, capacity.

$ dmidecode -t17




Appendix

You can change value of flag -t within command with below value:

Type

Information

0

BIOS

1

System

2

Baseboard

3

Chassis

4

Processor

​5

Memory Controller

6

Memory Module

7

Cache

8

Port Connector

9

System Slots

10

Onboard Devices

11

OEM Strings

12

System Configuration Options

13

BIOS Language

14

Group Associations

15

System Event Log

16

Physical Memory Array

17

Memory Device

18

32-bit Memory Error

19

Memory Array Mapped Address

20

Memory Device Mapped Address

21

Bult-in Pointing Device

22

Portable Battery

23

System Reset

24

Hardware Security

25

System Power Controls

26

Voltage Probe

27

Cooling Device

28

Temperature Probe

29

Electrical Current Probe

30

Out-of-band Remote Access

31

Boot Integrity Services

32

System Boot

33

64-bit Memory Error

34

Management Device

35

Management Device Component

36

Management Device Threshold Data

37

Memmory Channel

38

IPMI Device

39

Power Supply

40

Additional Information

41

Onboard Devices Extended Information

42

Management Controller Host Interface



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