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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 Interface |
| 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 |
3) 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 cache | |
| Or | |
| [root@linuxtechi ~]# dmidecode -t 7 | |
| # dmidecode 2.12 | |
| SMBIOS 2.5 present. | |
| Handle 0x009C, DMI type 7, 19 bytes | |
| Cache 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-associative | |
| Handle 0x009D, DMI type 7, 19 bytes | |
| Cache 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 2.12 | |
| SMBIOS 2.5 present. | |
| Handle 0x0005, DMI type 0, 24 bytes | |
| BIOS 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: 0.0 |
5) 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 2.12 | |
| SMBIOS 2.5 present. | |
| Handle 0x0004, DMI type 3, 22 bytes | |
| Chassis 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 Specified |
6) 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 2.12 | |
| SMBIOS 2.5 present. | |
| Handle 0x0003, DMI type 2, 16 bytes | |
| Base 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: 0 | |
| Handle 0x0027, DMI type 10, 6 bytes | |
| On Board Device Information | |
| Type: Video | |
| Status: Enabled | |
| Description: ServerEngines Pilot II | |
| Handle 0x0028, DMI type 10, 6 bytes | |
| On Board Device Information | |
| Type: Ethernet | |
| Status: Enabled | |
| Description: Intel Dual GbE #1 | |
| Handle 0x0029, DMI type 10, 6 bytes | |
| On Board Device Information | |
| Type: Ethernet | |
| Status: Enabled | |
| Description: Intel Dual GbE #2 | |
| Handle 0x002A, DMI type 10, 6 bytes | |
| On Board Device Information | |
| Type: SATA Controller | |
| Status: Enabled | |
| Description: ICH10 Integrated SATA Controller |
7) 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 2.12 | |
| SMBIOS 2.5 present. | |
| Handle 0x0002, DMI type 1, 27 bytes | |
| System 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 Specified | |
| Handle 0x002C, DMI type 12, 5 bytes | |
| System Configuration Options | |
| Option 1: J5C3 2-3: Close to clear Password | |
| Handle 0x002D, DMI type 12, 5 bytes | |
| System Configuration Options | |
| Option 1: J5C2 2-3: Close to clear CMOS | |
| Handle 0x002E, DMI type 12, 5 bytes | |
| System Configuration Options | |
| Option 1: J6D1 2-3: Close for BIOS Recovery | |
| Handle 0x002F, DMI type 12, 5 bytes | |
| System Configuration Options | |
| Option 1: J5C1 2-3: Close to Force ME Update Mode | |
| Handle 0x0030, DMI type 12, 5 bytes | |
| System Configuration Options | |
| Option 1: J9C3: SATA RAID Key | |
| Handle 0x0031, DMI type 12, 5 bytes | |
| System Configuration Options | |
| Option 1: J5A1 2-3: Close to Force BMC Update Mode | |
| Handle 0x0034, DMI type 32, 20 bytes | |
| System Boot Information | |
| Status: No errors detected |
8) 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 2.12 | |
| SMBIOS 2.5 present. | |
| Handle 0x0043, DMI type 17, 27 bytes | |
| Memory 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.A00LF | |
| Handle 0x0045, DMI type 17, 27 bytes | |
| Memory 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 2.12 | |
| SMBIOS 2.5 present. | |
| Handle 0x0035, DMI type 16, 15 bytes | |
| Physical 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 | |
| Handle 0x0037, DMI type 16, 15 bytes | |
| Physical 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 | |
| Handle 0x0039, DMI type 16, 15 bytes | |
| Physical 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 processor | |
| or | |
| [root@linuxtechi ~]# dmidecode -t 4 | |
| # dmidecode 2.12 | |
| SMBIOS 2.5 present. | |
| Handle 0x009B, DMI type 4, 40 bytes | |
| Processor 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 33
11) 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 4 | |
| or | |
| [root@linuxtechi ~]# dmidecode --dump -t 4 |
12 ) 显示 dmidecode 版本
应用上面的 dmidecode 命令显示它的版本
| [root@linuxtechi ~]# dmidecode -V | |
| 2.12 | |
| [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）
正文完
