今天小编给大家分享一下Linux dmidecode命令怎么用的相关知识点，内容详细，逻辑清晰，相信大部分人都还太了解这方面的知识，所以分享这篇文章给大家参考一下，希望大家阅读完这篇文章后有所收获，下面我们一起来了解一下吧。
dmidecode
在Linux系统下获取有关硬件方面的信息
由于DMI信息可以人为修改，因此里面的信息不一定是系统准确的信息。dmidecode遵循SMBIOS/DMI标准，其输出的信息包括BIOS、系统、主板、处理器、内存、缓存等等。
DMI（Desktop Management Interface,DMI）就是帮助收集电脑系统信息的管理系统，DMI信息的收集必须在严格遵照SMBIOS规范的前提下进行。SMBIOS（System Management BIOS）是主板或系统制造者以标准格式显示产品管理信息所需遵循的统一规范。SMBIOS和DMI是由行业指导机构Desktop Management Task Force(DMTF)起草的开放性的技术标准，其中DMI设计适用于任何的平台和操作系统。
DMI充当了管理工具和系统层之间接口的角色。它建立了标准的可管理系统更加方便了电脑厂商和用户对系统的了解。DMI的主要组成部分是Management Information Format(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。通过DMI，用户可以获取序列号、电脑厂商、串口信息以及其它系统配件信息。
dmidecode [选项]
-d：(default:/dev/mem)从设备文件读取信息，输出内容与不加参数标准输出相同。 -h：显示帮助信息。 -s：只显示指定DMI字符串的信息。(string) -t：只显示指定条目的信息。(type) -u：显示未解码的原始条目内容。 --dump-bin file：将DMI数据转储到一个二进制文件中。 --from-dump FILE：从一个二进制文件读取DMI数据。 -V：显示版本信息。
dmidecode参数string及type列表：
（1）Valid string keywords are：
bios-vendor
bios-version
bios-release-date
system-manufacturer
system-product-name
system-version
system-serial-number
system-uuid
baseboard-manufacturer
baseboard-product-name
baseboard-version
baseboard-serial-number
baseboard-asset-tag
chassis-manufacturer
chassis-type
chassis-version
chassis-serial-number
chassis-asset-tag
processor-family
processor-manufacturer
processor-version
processor-frequency
（2）Valid type keywords are：
bios
system
baseboard
chassis
processor
memory
Cache
connector
slot
（3）type全部编码列表：
BIOS
System
Base Board
Chassis
Processor
Memory Controller
Memory Module
Cache
Port Connector
System Slots
On Board Devices
OEM Strings
System Configuration Options
BIOS Language
Group Associations
System Event Log
Physical Memory Array
Memory Device
32-bit Memory Error
Memory Array Mapped Address
Memory Device Mapped Address
Built-in Pointing Device
Portable Battery
System Reset
Hardware Security
System Power Controls
Voltage Probe
Cooling Device
Temperature Probe
Electrical Current Probe
Out-of-band Remote Access
Boot Integrity Services
System Boot
64-bit Memory Error
Management Device
Management Device Component
Management Device Threshold Data
Memory Channel
IPMI Device
Power Supply
Additional Information
Onboard Device
dmidecode -t 1 # 查看服务器信息 dmidecode | grep 'Product Name' # 查看服务器型号 dmidecode |grep 'Serial Number' # 查看主板的序列号 dmidecode -t 2 # 查看主板信息 dmidecode -s system-serial-number # 查看系统序列号 dmidecode -t memory # 查看内存信息 dmidecode -t 11 # 查看OEM信息 dmidecode -t 17 # 查看内存条数 dmidecode -t 16 # 查询内存信息 dmidecode -t 4 # 查看CPU信息 cat /proc/scsi/scsi # 查看服务器硬盘信息
不带选项执行dmidecode命令通常会输出所有的硬件信息。dmidecode命令有个很有用的选项-t，可以按指定类型输出相关信息，假如要获得处理器方面的信息，则可以执行：
[root@localhost ~]# dmidecode -t processor # dmidecode 2.11 SMBIOS 2.5 present. Handle 0x0001, DMI type 4, 40 bytes Processor Information Socket Designation: Node 1 Socket 1 Type: Central Processor Family: Xeon MP Manufacturer: Intel(R) Corporation id: C2 06 02 00 FF FB EB BF Signature: Type 0, Family 6, Model 44, Stepping 2 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 E5620 @ 2.40GHz Voltage: 1.2 V External Clock: 5866 MHz Max Speed: 4400 MHz Current Speed: 2400 MHz Status: Populated, Enabled Upgrade: ZIF Socket L1 Cache Handle: 0x0002 L2 Cache Handle: 0x0003 L3 Cache Handle: 0x0004 Serial Number: Not Specified Asset Tag: Not Specified Part Number: Not Specified Core Count: 4 Core Enabled: 4 Thread Count: 8 Characteristics: 64-bit capable Handle 0x0055, DMI type 4, 40 bytes Processor Information Socket Designation: Node 1 Socket 2 Type: Central Processor Family: Xeon MP Manufacturer: Not Specified ID: 00 00 00 00 00 00 00 00 Signature: Type 0, Family 0, Model 0, Stepping 0 Flags: None Version: Not Specified Voltage: 1.2 V External Clock: 5866 MHz Max Speed: 4400 MHz Current Speed: Unknown Status: Unpopulated Upgrade: ZIF Socket L1 Cache Handle: Not Provided L2 Cache Handle: Not Provided L3 Cache Handle: Not Provided Serial Number: Not Specified Asset Tag: Not Specified Part Number: Not Specified Characteristics: None
查看内存的插槽数，已经使用多少插槽。每条内存多大，已使用内存多大
dmidecode|grep -P -A5 "Memory\s+Device"|grep Size|grep -v Range # Size: 2048 MB # Size: 2048 MB # Size: 4096 MB # Size: No Module Installed
查看内存支持的最大内存容量
dmidecode|grep -P 'Maximum\s+Capacity' # Maximum Capacity: 16 GB
查看内存的频率
dmidecode|grep -A16 "Memory Device" # Memory Device # Array Handle: 0x1000 # Error Information Handle: Not Provided # Total Width: 72 bits # Data Width: 64 bits # Size: 2048 MB # Form Factor: DIMM # Set: 1 # Locator: DIMM_A1 # Bank Locator: Not Specified # Type: DDR3 # Type Detail: Synchronous Unbuffered (Unregistered) # Speed: 1333 MHz # Manufacturer: 00CE000080CE # Serial Number: 4830F3E1 # Asset Tag: 01093200 # Part Number: M391B5673EH1-CH9 # -- # Memory Device # Array Handle: 0x1000 # Error Information Handle: Not Provided # Total Width: 72 bits # Data Width: 64 bits # Size: 2048 MB # Form Factor: DIMM # Set: 1 # Locator: DIMM_A2 # Bank Locator: Not Specified # Type: DDR3 # Type Detail: Synchronous Unbuffered (Unregistered) # Speed: 1333 MHz # Manufacturer: 00AD000080AD # Serial Number: 1BA1F0B5 # Asset Tag: 01110900 # Part Number: HMT325U7BFR8C-H9 # -- dmidecode|grep -A16 "Memory Device"|grep 'Speed' # Speed: 1333 MHz # Speed: 1333 MHz # Speed: 1333 MHz # Speed: Unknown ```shell
以上就是“Linux dmidecode命令怎么用”这篇文章的所有内容，感谢各位的阅读！相信大家阅读完这篇文章都有很大的收获，小编每天都会为大家更新不同的知识，如果还想学习更多的知识，请关注亿速云行业资讯频道。
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