@ -1,9 +1,6 @@
dmidecode
===
# **dmidecode**
在Linux系统下获取有关硬件方面的信息
## 补充说明
## 说明
**dmidecode命令** 可以让你在Linux系统下获取有关硬件方面的信息。dmidecode的作用是将DMI数据库中的信息解码， ， ，
@ -11,284 +8,127 @@ DMI（ ）
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，
### 语法
```
dmidecode [选项]
```
### 选项
```info
Usage: dmidecode [OPTIONS]
```
-d：
-h：
-s： )
-t：
-u：
--dump-bin file：
--from-dump FILE：
-V：
-d, --dev-mem FILE 从设备文件读取信息，输出内容与不加参数标准输出相同(默认: /dev/mem)
-q, --quiet Less verbose output
-s, --string KEYWORD 只显示指定DMI字符串的信息(string)
-t, --type TYPE 只显示指定类型的信息(type )
-u, --dump 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
--no-sysfs Do not attempt to read DMI data from sysfs files
--oem-string N Only display the value of the given OEM string
```
**dmidecode参数string及type列表：
## dmidecode参数string及type列表如下
（ ） ：
* 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
* 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
（ ） ：
* bios
* system
* baseboard
* chassis
* processor
* memory
* Cache
* connector
* slot
* bios
* system
* baseboard
* chassis
* processor
* memory
* Cache
* connector
* slot
（ ） ：
* 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
### 实例
```ba sh
* 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
## 实例
```sh
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 | 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 -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， ， ， ：
```
[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
```bash
dmidecode|grep -P -A5 "Memory\s+Device"|grep Size|grep -v Range
#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， ， ， ：
dmidecode -t processor
# Size: 2048 MB
# Size: 2048 MB
# Size: 4096 MB
# Size: No Module Installed
dmidecode | grep -P -A5 "Memory\s+Device"|grep Size|grep -v Range # 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 'Maximum\s+Capacity' # 查看支持的最大内存容量
dmidecode | grep -A16 "Memory Device"|grep 'Speed' # 查看内存的频率
dmidecode | grep -A16 "System Information$" # 查看主板详细信息
```
查看内存支持的最大内存容量
```bash
dmidecode|grep -P 'Maximum\s+Capacity'
# Maximum Capacity: 16 GB
```
查看内存的频率
```bash
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
```
<!-- Linux命令行搜索引擎： - command/ -->
root
6 years ago