Linux常用命令-dmidecode

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命令

dmidecode

描述

DMI table decoder
查看系统硬件信息

用法

1
dmidecode [OPTIONS]

选项

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Options:
  -d, --dev-mem FILE     读取指定设备文件,默认为/dev/mem
  -q, --quiet            精简输出
  -s, --string KEYWORD   显示指定DMI字符串的值
  -t, --type TYPE        显示指定类型信息
  -H, --handle HANDLE    
  -u, --dump             不要解码信息,而是转换成十六进制
      --dump-bin FILE    保存DMI信息到二进制文件中
      --from-dump FILE   从二进制文件中读取DMI信息
      --no-sysfs         不读取sysfs中的DMI信息
      --oem-string N     显示指定OEM字符串的值

DMI类型分类:
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   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

查看指定硬件信息时可以使用以下关键字代替
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

注意

无

示例

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$ dmidecode |wc -l
11810
$ dmidecode -q |wc -l
10408
$ dmidecode |more
# dmidecode 3.2
Getting SMBIOS data from sysfs.
SMBIOS 2.7 present.
620 structures occupying 29060 bytes.
Table at 0x000E0010.

Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
        Vendor: Phoenix Technologies LTD
        Version: 6.00
        Release Date: 02/27/2020
        Address: 0xEA480
        Runtime Size: 88960 bytes
        ROM Size: 64 kB
        Characteristics:
                ISA is supported
                PCI is supported
                PC Card (PCMCIA) is supported
                PNP is supported
                APM is supported
                BIOS is upgradeable
                BIOS shadowing is allowed
                ESCD support is available
                Boot from CD is supported
                Selectable boot is supported
                EDD is supported
                Print screen service is supported (int 5h)
                8042 keyboard services are supported (int 9h)
                Serial services are supported (int 14h)
                Printer services are supported (int 17h)
                CGA/mono video services are supported (int 10h)
                ACPI is supported
                Smart battery is supported
                BIOS boot specification is supported
                Function key-initiated network boot is supported
                Targeted content distribution is supported
        BIOS Revision: 4.6
        Firmware Revision: 0.0

Handle 0x0001, DMI type 1, 27 bytes
System Information
        Manufacturer: VMware, Inc.
        Product Name: VMware Virtual Platform
        Version: None
        Serial Number: VMware-56 4d f2 d8 de 30 bb 4d-4e 83 43 28 7b e7 b6 dd
        UUID: d8f24d56-30de-4dbb-4e83-43287be7b6dd
        Wake-up Type: Power Switch
        SKU Number: Not Specified
        Family: Not Specified

Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
        Manufacturer: Intel Corporation
        Product Name: 440BX Desktop Reference Platform
        Version: None
        Serial Number: None
        Asset Tag: Not Specified
        Features: None
        Location In Chassis: Not Specified
        Chassis Handle: 0x0000
        Type: Unknown
        Contained Object Handles: 0
...
# 显示制造商
$ dmidecode -s system-manufacturer
VMware, Inc.
# 显示产品名称
$ dmidecode -s system-product-name
VMware Virtual Platform
# 显示序列号
$ dmidecode -s system-serial-number
VMware-56 4d f2 d8 de 30 bb 4d-4e 83 43 28 7b e7 b6 dd
# 显示系统uuid
$ dmidecode -s  system-uuid
d8f24d56-30de-4dbb-4e83-43287be7b6dd

# 显示bios信息
$ dmidecode -t bios
# dmidecode 3.2
Getting SMBIOS data from sysfs.
SMBIOS 2.7 present.

Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
        Vendor: Phoenix Technologies LTD
        Version: 6.00
        Release Date: 02/27/2020
        Address: 0xEA480
        Runtime Size: 88960 bytes
        ROM Size: 64 kB
        Characteristics:
                ISA is supported
                PCI is supported
                PC Card (PCMCIA) is supported
                PNP is supported
                APM is supported
                BIOS is upgradeable
                BIOS shadowing is allowed
                ESCD support is available
                Boot from CD is supported
                Selectable boot is supported
                EDD is supported
                Print screen service is supported (int 5h)
                8042 keyboard services are supported (int 9h)
                Serial services are supported (int 14h)
                Printer services are supported (int 17h)
                CGA/mono video services are supported (int 10h)
                ACPI is supported
                Smart battery is supported
                BIOS boot specification is supported
                Function key-initiated network boot is supported
                Targeted content distribution is supported
        BIOS Revision: 4.6
        Firmware Revision: 0.0
# 显示系统信息
$ dmidecode -t system
# dmidecode 3.2
Getting SMBIOS data from sysfs.
SMBIOS 2.7 present.

Handle 0x0001, DMI type 1, 27 bytes
System Information
        Manufacturer: VMware, Inc.
        Product Name: VMware Virtual Platform
        Version: None
        Serial Number: VMware-56 4d f2 d8 de 30 bb 4d-4e 83 43 28 7b e7 b6 dd
        UUID: d8f24d56-30de-4dbb-4e83-43287be7b6dd
        Wake-up Type: Power Switch
        SKU Number: Not Specified
        Family: Not Specified

Handle 0x01A1, DMI type 15, 29 bytes
System Event Log
        Area Length: 16 bytes
        Header Start Offset: 0x0000
        Header Length: 16 bytes
        Data Start Offset: 0x0010
        Access Method: General-purpose non-volatile data functions
        Access Address: 0x0000
        Status: Invalid, Full
        Change Token: 0x00000036
        Header Format: Type 1
        Supported Log Type Descriptors: 3
        Descriptor 1: POST error
        Data Format 1: POST results bitmap
        Descriptor 2: Single-bit ECC memory error
        Data Format 2: Multiple-event
        Descriptor 3: Multi-bit ECC memory error
        Data Format 3: Multiple-event

Handle 0x0265, DMI type 23, 13 bytes
System Reset
        Status: Enabled
        Watchdog Timer: Present
        Boot Option: Do Not Reboot
        Boot Option On Limit: Do Not Reboot
        Reset Count: Unknown
        Reset Limit: Unknown
        Timer Interval: Unknown
        Timeout: Unknown

Handle 0x0268, DMI type 32, 20 bytes
System Boot Information
        Status: No errors detected

# -t也可以指定具体的类型编号
# 显示系统可以扩展到多大内存,由于这里是虚拟机,所以显示的信息不准确
$ dmidecode -t 16
# dmidecode 3.2
Getting SMBIOS data from sysfs.
SMBIOS 2.7 present.

Handle 0x01A2, DMI type 16, 23 bytes
Physical Memory Array
        Location: System Board Or Motherboard
        Use: System Memory
        Error Correction Type: None
        Maximum Capacity: 3 GB
        Error Information Handle: Not Provided
        Number Of Devices: 64

$ dmidecode -t 32,33
# dmidecode 3.2
Getting SMBIOS data from sysfs.
SMBIOS 2.7 present.

Handle 0x0268, DMI type 32, 20 bytes
System Boot Information
        Status: No errors detected

Handle 0x0269, DMI type 33, 31 bytes
64-bit Memory Error Information
        Type: OK
        Granularity: Unknown
        Operation: Unknown
        Vendor Syndrome: Unknown
        Memory Array Address: Unknown
        Device Address: Unknown
        Resolution: Unknown