使用dmidecode获得详细硬件信息

dmidecode能把系统中的硬件信息读出、解码并友好的展现给我们；

一些知名厂商的服务器还可以展现出其服务器型号，序列号等等，可以有效的帮助我们做一些设备管理的工作。

安装：

debian/ubuntu: apt-get install dmidecode

FreeBSD: cd /usr/ports/sysutils/dmidecode && make install clean;

在我的IBM T43上读取的主板硬件信息：

$ dmidecode -t 1

Handle 0x0001, DMI type 1, 25 bytes
System Information
    Manufacturer: IBM
    Product Name: 2668AH3
    Version: ThinkPad T43
    Serial Number: L3TLL14
    UUID: 540DB801-471D-11CB-8A5F-912E855BB5C9
    Wake-up Type: Power Switch

在一台服务器上读取的CPU信息：

$ dmidecode -t 4

Handle 0x002B, DMI type 4, 35 bytes
Processor Information
        Socket Designation: CPU1
        Type: Central Processor
        Family: Xeon
        Manufacturer: Intel(R) Corporation
        ID: F6 06 00 00 FF FB EB BF
        Signature: Type 0, Family 6, Model 15, 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 (Fast floating-point save and restore)
                SSE (Streaming SIMD extensions)
                SSE2 (Streaming SIMD extensions 2)
                SS (Self-snoop)
                HTT (Hyper-threading technology)
                TM (Thermal monitor supported)
                PBE (Pending break enabled)
        Version: Intel(R) Xeon(R) CPU            5110  @ 1.60GHz
        Voltage: 1.6 V
        External Clock: 1066 MHz
        Max Speed: 1600 MHz
        Current Speed: 1600 MHz
        Status: Populated, Enabled
        Upgrade: ZIF Socket
        L1 Cache Handle: 0x002D
        L2 Cache Handle: 0x002C
        L3 Cache Handle: Not Provided
        Serial Number: Not Specified
        Asset Tag: Not Specified
        Part Number: Not Specified

Handle 0x002E, DMI type 4, 35 bytes
Processor Information
        Socket Designation: CPU2
        Type: Central Processor
        Family: <OUT OF SPEC>
        Manufacturer: Not Specified
        ID: 00 00 00 00 00 00 00 00
        Version: Not Specified
        Voltage: 0.0 V
        External Clock: 1066 MHz
        Max Speed: 1600 MHz
        Current Speed: 1600 MHz
        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

更多的参数可以查询其man手册。