Dmidecode命令
DMI是桌面管理接口的意思，计算机硬件信息存放在DMI表中。也有叫做SMBIOS（系统管理BIOS）表的。
Dmidecode命令用于解析DMI表，获取相应硬件信息。
硬件DMI类型代码：
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 On Board 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 Built-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 Memory Channel
38 IPMI Device
39 Power Supply
40 Additional Information
41 Onboard Devices Extended Information
42 Management Controller Host Interface
DMI类型关键词：
Keyword Types
------------------------------
bios 0, 13
system 1, 12, 15, 23, 32
baseboard 2, 10, 41
chassis 3
processor 4
memory 5, 6, 16, 17
cache 7
connector 8
slot 9
dmidecode命令示例：
dmidecode 查看全部硬件信息
dmidecode -t 1 查看机器型号、序列号等
dmidecode -t 4 查看CPU信息
dmidecode -t 17 查看内存信息
dmidecode --type 0 --type 13
dmidecode --type 0,13
dmidecode -t memory
dmidecode --type bios
dmidecode --type BIOS