dmidecode 是一个工具或命令，以人类可读的格局检索系统硬件的有用信息。dmidecode 可用于所有相似 Linux 的零碎 (RHEL, CentOS, Debian 和 SUSE)。dmidecode 代表 DMI (Desktop Management Interface) 它从 DMI 表中读取数据，并以人类可读的格局展现给咱们。DMI 表保留了零碎硬件的详细信息，如 BIOS，序列号，RAM 和 CPU 详细信息等，除此之外，dmidecode 还能够检索对于零碎反对的最大配置的详细信息。
在本文中，咱们将介绍 12 个Linux 零碎下 dmidecode 相干示例。
1) dmidecode 命令输入
When we run the dmidecode command then it displays the output on the
screen, in the output we have the records, each record has 4 different
values.
当咱们运行 dmidecode 命令时，会在屏幕上输入记录，每个记录有 4 个不同的值。
- Handle – 惟一标识符号
- Type – 它讲述的是硬件组成，在上面的示例中，DMI 类型 38 指的是 IPMI 设施
- Size – 记录大小
- Decoded value – 对于记录类型的信息，在上面的示例中，IPMI 设施的解码值是接口类型，规格版本，基址和寄存器间距
让咱们运行 dmidecode 命令
[root@linuxtechi ~]# dmidecode | more输入如下所示
2) 用于 dmidecode 命令不同的 DMI 类型
以下是 dmidecode 命令中应用的 DMI 类型
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 Access31 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 InterfaceKeyword 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 93) 应用类型 id 显示硬件信息
在 dmidecode 命令中，咱们能够应用关键字或类型 id 来获取零碎的硬件信息。在例 2 中，咱们曾经列出了关键字及其类型 id。让咱们假如咱们想要显示零碎的 cache 信息，而后咱们能够运行上面的任何命令
[root@linuxtechi ~]# dmidecode -t cacheOr[root@linuxtechi ~]# dmidecode -t 7# dmidecode 2.12SMBIOS 2.5 present.Handle 0x009C, DMI type 7, 19 bytesCache Information Socket Designation: L1-Cache Configuration: Enabled, Not Socketed, Level 1 Operational Mode: Write Back Location: Internal Installed Size: 192 kB Maximum Size: 192 kB Supported SRAM Types: Synchronous Installed SRAM Type: Synchronous Speed: Unknown Error Correction Type: Single-bit ECC System Type: Data Associativity: 8-way Set-associativeHandle 0x009D, DMI type 7, 19 bytesCache Information Socket Designation: L1-Cache Configuration: Enabled, Not Socketed, Level 1 Operational Mode: Write Back Location: Internal Installed Size: 192 kB Maximum Size: 192 kB Supported SRAM Types: Synchronous Installed SRAM Type: Synchronous Speed: Unknown Error Correction Type: Single-bit ECC System Type: Instruction Associativity: 4-way Set-associative…………………………………………………………………………4) 显示 BIOS 信息
运行 dmidecode 命令后输出 bios 作为类型
[root@linuxtechi ~]# dmidecode --type bios Or[root@linuxtechi ~]# dmidecode -t bios# dmidecode 2.12SMBIOS 2.5 present.Handle 0x0005, DMI type 0, 24 bytesBIOS Information Vendor: Intel Corp. Version: QSSC-S4R.QCI.01.00.0037.061120141015 Release Date: 06/11/2014 Address: 0xF0000 Runtime Size: 64 kB ROM Size: 16384 kB Characteristics: PCI is supported PNP is supported BIOS is upgradeable BIOS shadowing is allowed Boot from CD is supported Selectable boot is supported EDD is supported 3.5"/2.88 MB floppy services are supported (int 13h) Print screen service is supported (int 5h) 8042 keyboard services are supported (int 9h) Serial services are supported (int 14h) CGA/mono video services are supported (int 10h) ACPI is supported USB legacy is supported LS-120 boot is supported ATAPI Zip drive boot is supported Function key-initiated network boot is supported Targeted content distribution is supported BIOS Revision: 17.18 Firmware Revision: 0.05) 显示机箱硬件信息
执行以下 dmidecode 命令显示机箱信息
[root@linuxtechi ~]# dmidecode -t chassis# dmidecode 2.12SMBIOS 2.5 present.Handle 0x0004, DMI type 3, 22 bytesChassis Information Manufacturer: .............................. Type: Main Server Chassis Lock: Not Present Version: 32S4RCS0010 Serial Number: QTFCVR1110136 Asset Tag: .................... Boot-up State: Safe Power Supply State: Safe Thermal State: Safe Security Status: Unknown OEM Information: 0x01000181 Height: 1 U Number Of Power Cords: 1 Contained Elements: 0 SKU Number: Not Specified6) 显示底板硬件信息
执行上面的 dmidecode 命令来显示对于零碎底板的硬件信息
[root@linuxtechi ~]# dmidecode -t baseboard# dmidecode 2.12SMBIOS 2.5 present.Handle 0x0003, DMI type 2, 16 bytesBase Board Information Manufacturer: QCI Product Name: QSSC-S4R Version: 31S4RMB00B0 Serial Number: LVR1340271 Asset Tag: .................... Features: Board is a hosting board Board is replaceable Location In Chassis: Not Specified Chassis Handle: 0x0004 Type: Motherboard Contained Object Handles: 0Handle 0x0027, DMI type 10, 6 bytesOn Board Device Information Type: Video Status: Enabled Description: ServerEngines Pilot IIHandle 0x0028, DMI type 10, 6 bytesOn Board Device Information Type: Ethernet Status: Enabled Description: Intel Dual GbE #1Handle 0x0029, DMI type 10, 6 bytesOn Board Device Information Type: Ethernet Status: Enabled Description: Intel Dual GbE #2Handle 0x002A, DMI type 10, 6 bytesOn Board Device Information Type: SATA Controller Status: Enabled Description: ICH10 Integrated SATA Controller7) 显示零碎的硬件信息
要显示无关零碎的硬件信息(制造商、产品名称和序列号等)，运行以下 dmidecode 命令
[root@linuxtechi ~]# dmidecode -t system# dmidecode 2.12SMBIOS 2.5 present.Handle 0x0002, DMI type 1, 27 bytesSystem Information Manufacturer: QCI Product Name: QSSC-S4R Version: .................... Serial Number: ............ UUID: 2DD583E2-4A58-11E0-A580-00101859A783 Wake-up Type: AC Power Restored SKU Number: Not Specified Family: Not SpecifiedHandle 0x002C, DMI type 12, 5 bytesSystem Configuration Options Option 1: J5C3 2-3: Close to clear PasswordHandle 0x002D, DMI type 12, 5 bytesSystem Configuration Options Option 1: J5C2 2-3: Close to clear CMOSHandle 0x002E, DMI type 12, 5 bytesSystem Configuration Options Option 1: J6D1 2-3: Close for BIOS RecoveryHandle 0x002F, DMI type 12, 5 bytesSystem Configuration Options Option 1: J5C1 2-3: Close to Force ME Update ModeHandle 0x0030, DMI type 12, 5 bytesSystem Configuration Options Option 1: J9C3: SATA RAID KeyHandle 0x0031, DMI type 12, 5 bytesSystem Configuration Options Option 1: J5A1 2-3: Close to Force BMC Update ModeHandle 0x0034, DMI type 32, 20 bytesSystem Boot Information Status: No errors detected8) 显示已装置的内存信息
要显示无关已装置的物理内存（RAM）的信息，请运行以下命令
[root@linuxtechi ~]# dmidecode -t 17 # dmidecode 2.12SMBIOS 2.5 present.Handle 0x0043, DMI type 17, 27 bytesMemory Device Array Handle: 0x0035 Error Information Handle: Not Provided Total Width: 72 bits Data Width: 72 bits Size: 4096 MB Form Factor: DIMM Set: 1 Locator: DIMM_1B Bank Locator: MEM1 SLOT Type: DDR3 Type Detail: Synchronous Speed: 1067 MHz Manufacturer: 0x0198 Serial Number: 0xA504DB27 Asset Tag: Unknown Part Number: 9965426-047.A00LFHandle 0x0045, DMI type 17, 27 bytesMemory Device Array Handle: 0x0035 Error Information Handle: Not Provided Total Width: 72 bits Data Width: 72 bits Size: 4096 MB Form Factor: DIMM Set: 2 Locator: DIMM_1A Bank Locator: MEM1 SLOT Type: DDR3 Type Detail: Synchronous Speed: 1067 MHz Manufacturer: 0x830B Serial Number: 0x6C443023…………………………………………………………应用上面的 dmidecode 命令查找零碎反对的最大物理内存
[root@linuxtechi ~]# dmidecode -t 16 # dmidecode 2.12SMBIOS 2.5 present.Handle 0x0035, DMI type 16, 15 bytesPhysical Memory Array Location: Proprietary Add-on Card Use: System Memory Error Correction Type: Multi-bit ECC Maximum Capacity: 256 GB Error Information Handle: Not Provided Number Of Devices: 8Handle 0x0037, DMI type 16, 15 bytesPhysical Memory Array Location: Proprietary Add-on Card Use: System Memory Error Correction Type: Multi-bit ECC Maximum Capacity: 256 GB Error Information Handle: Not Provided Number Of Devices: 8Handle 0x0039, DMI type 16, 15 bytesPhysical Memory Array Location: Proprietary Add-on Card Use: System Memory Error Correction Type: Multi-bit ECC Maximum Capacity: 256 GB Error Information Handle: Not Provided Number Of Devices: 8……………………………………………………………9) 显示对于处理器的硬件信息
执行以下 dmidecode 命令显示处理器或 CPU 插座的硬件信息
[root@linuxtechi ~]# dmidecode -t processoror[root@linuxtechi ~]# dmidecode -t 4# dmidecode 2.12SMBIOS 2.5 present.Handle 0x009B, DMI type 4, 40 bytesProcessor Information Socket Designation: CPU1 Type: Central Processor Family: Xeon MP Manufacturer: Intel(R) Corporation ID: E6 06 02 00 FF FB EB BF Signature: Type 0, Family 6, Model 46, Stepping 6 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 E7540 @ 2.00GHz Voltage: 1.2 V External Clock: 133 MHz Max Speed: 4000 MHz Current Speed: 2000 MHz Status: Populated, Enabled Upgrade: Socket LGA1567 L1 Cache Handle: 0x009D L2 Cache Handle: 0x009E L3 Cache Handle: 0x009F Serial Number: Not Specified Asset Tag: Not Specified Part Number: Not Specified Core Count: 6 Core Enabled: 6 Thread Count: 12 Characteristics: 64-bit capable…………………………………………………10) 显示无关 64 位内存谬误的信息
要显示零碎的 64 位内存错误信息，请运行以下命令
[root@linuxtechi ~]# dmidecode -t 3311) 以十六进制输入 DMIDECODE 命令输入
如果您不想解码 dmidecode 命令的输入信息，但心愿将其转储为 16 进制格局，则能够在 dmidecode 命令中应用 -u 或 dump 选项，示例如下
[root@linuxtechi ~]# dmidecode -u -t 4or[root@linuxtechi ~]# dmidecode --dump -t 412 ) 显示 dmidecode 版本
应用上面的 dmidecode 命令显示它的版本
[root@linuxtechi ~]# dmidecode -V2.12[root@linuxtechi ~]#我的开源我的项目
- course-tencent-cloud（酷瓜云课堂 - gitee仓库）
- course-tencent-cloud（酷瓜云课堂 - github仓库）