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今天小編給大家分享一下Linux dmidecode命令怎么用的相關(guān)知識(shí)點(diǎn),內(nèi)容詳細(xì),邏輯清晰,相信大部分人都還太了解這方面的知識(shí),所以分享這篇文章給大家參考一下,希望大家閱讀完這篇文章后有所收獲,下面我們一起來了解一下吧。
dmidecode
在Linux系統(tǒng)下獲取有關(guān)硬件方面的信息
由于DMI信息可以人為修改,因此里面的信息不一定是系統(tǒng)準(zhǔn)確的信息。dmidecode遵循SMBIOS/DMI標(biāo)準(zhǔn),其輸出的信息包括BIOS、系統(tǒng)、主板、處理器、內(nèi)存、緩存等等。
DMI(Desktop Management Interface,DMI)就是幫助收集電腦系統(tǒng)信息的管理系統(tǒng),DMI信息的收集必須在嚴(yán)格遵照SMBIOS規(guī)范的前提下進(jìn)行。SMBIOS(System Management BIOS)是主板或系統(tǒng)制造者以標(biāo)準(zhǔn)格式顯示產(chǎn)品管理信息所需遵循的統(tǒng)一規(guī)范。SMBIOS和DMI是由行業(yè)指導(dǎo)機(jī)構(gòu)Desktop Management Task Force(DMTF)起草的開放性的技術(shù)標(biāo)準(zhǔn),其中DMI設(shè)計(jì)適用于任何的平臺(tái)和操作系統(tǒng)。
DMI充當(dāng)了管理工具和系統(tǒng)層之間接口的角色。它建立了標(biāo)準(zhǔn)的可管理系統(tǒng)更加方便了電腦廠商和用戶對(duì)系統(tǒng)的了解。DMI的主要組成部分是Management Information Format(MIF)數(shù)據(jù)庫。這個(gè)數(shù)據(jù)庫包括了所有有關(guān)電腦系統(tǒng)和配件的信息。通過DMI,用戶可以獲取序列號(hào)、電腦廠商、串口信息以及其它系統(tǒng)配件信息。
dmidecode [選項(xiàng)]
-d:(default:/dev/mem)從設(shè)備文件讀取信息,輸出內(nèi)容與不加參數(shù)標(biāo)準(zhǔn)輸出相同。 -h:顯示幫助信息。 -s:只顯示指定DMI字符串的信息。(string) -t:只顯示指定條目的信息。(type) -u:顯示未解碼的原始條目內(nèi)容。 --dump-bin file:將DMI數(shù)據(jù)轉(zhuǎn)儲(chǔ)到一個(gè)二進(jìn)制文件中。 --from-dump FILE:從一個(gè)二進(jìn)制文件讀取DMI數(shù)據(jù)。 -V:顯示版本信息。
dmidecode參數(shù)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全部編碼列表:
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 # 查看服務(wù)器信息 dmidecode | grep 'Product Name' # 查看服務(wù)器型號(hào) dmidecode |grep 'Serial Number' # 查看主板的序列號(hào) dmidecode -t 2 # 查看主板信息 dmidecode -s system-serial-number # 查看系統(tǒng)序列號(hào) dmidecode -t memory # 查看內(nèi)存信息 dmidecode -t 11 # 查看OEM信息 dmidecode -t 17 # 查看內(nèi)存條數(shù) dmidecode -t 16 # 查詢內(nèi)存信息 dmidecode -t 4 # 查看CPU信息 cat /proc/scsi/scsi # 查看服務(wù)器硬盤信息
不帶選項(xiàng)執(zhí)行dmidecode命令通常會(huì)輸出所有的硬件信息。dmidecode命令有個(gè)很有用的選項(xiàng)-t,可以按指定類型輸出相關(guān)信息,假如要獲得處理器方面的信息,則可以執(zhí)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
查看內(nèi)存的插槽數(shù),已經(jīng)使用多少插槽。每條內(nèi)存多大,已使用內(nèi)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
查看內(nèi)存支持的最大內(nèi)存容量
dmidecode|grep -P 'Maximum\s+Capacity' # Maximum Capacity: 16 GB
查看內(nèi)存的頻率
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
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