【Linux命令】dmidecode命令详解

dmidecode命令主要是通过DMI获取主机的硬件信息,通常是在不打开计算机机箱的情况下使用该命令来查找硬件详细信息。其输出的信息包括BIOS、系统、主板、处理器、内存、缓存等等。

什么是DMI?DMI (Desktop Management Interface, DMI)的主要组成部分是Management InformationFormat (MIF)数据库,这个数据库包括了所有有关电脑系统和配件的信息。

1.常用用法如下(需要root权限):

[root@localhost ~]$ dmidecode                          # 打印所有硬件信息
[root@localhost ~]$ dmidecode -q                       # 打印所有硬件信息,比较简洁
[root@localhost ~]$ dmidecode -h # 获取帮助 [root@localhost
~]$ dmidecode | grep 'Product Name' # 以过滤的方式来查看指定的硬件信息 [root@localhost ~]$ dmidecode --type bios # 查看BIOS相关的硬件信息 [root@localhost ~]$ dmidecode --type system # 查看系统相关的硬件信息 [root@localhost ~]$ dmidecode --type baseboard # 查看主板相关的硬件信息 [root@localhost ~]$ dmidecode --type chassis # 查看机箱相关的硬件信息 [root@localhost ~]$ dmidecode --type processor # 查看处理器相关的硬件信息 [root@localhost ~]$ dmidecode --type memory # 查看内存相关的硬件信息

2.查看具体细项信息(以system为例,需root用户)

[root@localhost ~]$ dmidecode -t 1   #查看system基本信息,-t等价于--type
[root@localhost ~]$ dmidecode -t 15  #查看system Event信息
[root@localhost ~]$ dmidecode -t 23  #查看system Reset信息
[root@localhost ~]$ dmidecode -t 32  #查看system Boot信息
[root@localhost ~]$ dmidecode -t 1,15,23,32  #查看system所有信息,等价于dmidecode -t system

dmidecode支持的数字参数如下:
       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

要获得处理器方面的信息,示例如下:

[root@localhost ~]# dmidecode -t 4
# dmidecode 2.12-dmifs
SMBIOS 3.0 present.
# SMBIOS implementations newer than version 2.8 are not
# fully supported by this version of dmidecode.
 
Handle 0x006C, DMI type 4, 48 bytes   #此处DMI type 4为查询所需的type数字参数
Processor Information
        Socket Designation: SOCKET 0
        Type: Central Processor
        Family: Xeon
        Manufacturer: Intel
        ID: F1 06 04 00 FF FB EB BF
        Signature: Type 0, Family 6, Model 79, Stepping 1
        Flags:
                FPU (Floating-point unit on-chip)
                VME (Virtual mode extension)
                DE (Debugging extension)
                PSE (Page size extension)
                TSC (Time stamp counter)
                MSR (Model specific registers)
                PAE (Physical address extension)
                MCE (Machine check exception)
                CX8 (CMPXCHG8 instruction supported)
                APIC (On-chip APIC hardware supported)
                SEP (Fast system call)
                MTRR (Memory type range registers)
                PGE (Page global enable)
                MCA (Machine check architecture)
                CMOV (Conditional move instruction supported)
                PAT (Page attribute table)
                PSE-36 (36-bit page size extension)
                CLFSH (CLFLUSH instruction supported)
                DS (Debug store)
                ACPI (ACPI supported)
                MMX (MMX technology supported)
                FXSR (FXSAVE and FXSTOR instructions supported)
                SSE (Streaming SIMD extensions)
                SSE2 (Streaming SIMD extensions 2)
                SS (Self-snoop)
                HTT (Multi-threading)
                TM (Thermal monitor supported)
                PBE (Pending break enabled)
        Version: Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
        Voltage: 1.8 V
        External Clock: 100 MHz
        Max Speed: 4000 MHz
        Current Speed: 2100 MHz
        Status: Populated, Enabled
        Upgrade: Socket LGA2011-3
        L1 Cache Handle: 0x0069
        L2 Cache Handle: 0x006A
        L3 Cache Handle: 0x006B
        Serial Number: Not Specified
        Asset Tag: Not Specified
        Part Number: Not Specified
        Core Count: 8
        Core Enabled: 8
        Thread Count: 16
        Characteristics:
                64-bit capable
                Multi-Core
                Hardware Thread
                Execute Protection
                Enhanced Virtualization
                Power/Performance Control
 
Handle 0x0070, DMI type 4, 48 bytes
Processor Information
        Socket Designation: SOCKET 1
        Type: Central Processor
        Family: Xeon
        Manufacturer: Intel
        ID: F1 06 04 00 FF FB EB BF
        Signature: Type 0, Family 6, Model 79, Stepping 1
        Flags:
                FPU (Floating-point unit on-chip)
                VME (Virtual mode extension)
                DE (Debugging extension)
                PSE (Page size extension)
                TSC (Time stamp counter)
                MSR (Model specific registers)
                PAE (Physical address extension)
                MCE (Machine check exception)
                CX8 (CMPXCHG8 instruction supported)
                APIC (On-chip APIC hardware supported)
                SEP (Fast system call)
                MTRR (Memory type range registers)
                PGE (Page global enable)
                MCA (Machine check architecture)
                CMOV (Conditional move instruction supported)
                PAT (Page attribute table)
                PSE-36 (36-bit page size extension)
                CLFSH (CLFLUSH instruction supported)
                DS (Debug store)
                ACPI (ACPI supported)
                MMX (MMX technology supported)
                FXSR (FXSAVE and FXSTOR instructions supported)
                SSE (Streaming SIMD extensions)
                SSE2 (Streaming SIMD extensions 2)
                SS (Self-snoop)
                HTT (Multi-threading)
                TM (Thermal monitor supported)
                PBE (Pending break enabled)
        Version: Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
        Voltage: 1.8 V
        External Clock: 100 MHz
        Max Speed: 4000 MHz
        Current Speed: 2100 MHz
        Status: Populated, Enabled
        Upgrade: Socket LGA2011-3
        L1 Cache Handle: 0x006D
        L2 Cache Handle: 0x006E
        L3 Cache Handle: 0x006F
        Serial Number: Not Specified
        Asset Tag: Not Specified
        Part Number: Not Specified
        Core Count: 8
        Core Enabled: 8
        Thread Count: 16
        Characteristics:
                64-bit capable
                Multi-Core
                Hardware Thread
                Execute Protection
                Enhanced Virtualization
                Power/Performance Control

 打印所以硬件信息(简洁)示例如下:

[root@localhost ~]$ dmidecode -q
//BIOS相关的硬件信息
BIOS Information
        Vendor: Bochs
        Version: Bochs
        Release Date: 01/01/2011
        Address: 0xE8000
        Runtime Size: 96 kB
        ROM Size: 64 kB
        Characteristics:
                BIOS characteristics not supported
                Targeted content distribution is supported
        BIOS Revision: 1.0

//系统相关的硬件信息
System Information
        Manufacturer: Bochs                                    # 厂商
        Product Name: Bochs                                    # 服务器型号
        Version: Not Specified                                 # 版本号
        Serial Number: 641ab5b5-f6c0-431f-864c-4e750d27de04    # 主板序列号
        UUID: 641AB5B5-F6C0-431F-864C-4E750D27DE04             # UUID
        Wake-up Type: Power Switch                             
        SKU Number: Not Specified
        Family: Not Specified

//机箱相关的硬件信息
Chassis Information
        Manufacturer: Bochs
        Type: Other
        Lock: Not Present
        Version: Not Specified
        Serial Number: Not Specified
        Asset Tag: Not Specified
        Boot-up State: Safe
        Power Supply State: Safe
        Thermal State: Safe
        Security Status: Unknown
        OEM Information: 0x00000000
        Height: Unspecified
        Number Of Power Cords: Unspecified

//处理器相关的硬件信息
Processor Information
        Socket Designation: CPU 1
        Type: Central Processor
        Family: Other
        Manufacturer: Bochs
        ID: F1 06 04 00 FF FB 8B 1F
        Version: Not Specified
        Voltage: Unknown
        External Clock: Unknown
        Max Speed: 2000 MHz
        Current Speed: 2000 MHz
        Status: Populated, Enabled
        Upgrade: Other

//物理内存阵列
Physical Memory Array
        Location: Other
        Use: System Memory
        Error Correction Type: Multi-bit ECC
        Maximum Capacity: 2 GB
        Number Of Devices: 1

//内存设备
Memory Device
        Total Width: 64 bits
        Data Width: 64 bits
        Size: 2048 MB
        Form Factor: DIMM
        Set: None
        Locator: DIMM 0
        Bank Locator: Not Specified
        Type: RAM
        Type Detail: None

//内存阵列映射地址
Memory Array Mapped Address
        Starting Address: 0x00000000000
        Ending Address: 0x0007FFFFFFF
        Range Size: 2 GB
        Partition Width: 1

//内存设备映射地址
Memory Device Mapped Address
        Starting Address: 0x00000000000
        Ending Address: 0x0007FFFFFFF
        Range Size: 2 GB
        Partition Row Position: 1

//系统引导
System Boot Information
        Status: No errors detected

 

参考文档:

Linux dmidecode 命令

posted @ 2020-02-11 10:26  李子恒  阅读(23005)  评论(0编辑  收藏  举报