A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
SMBIOS / DMI 标准，导出系统 BIOS 中描述的有关系统硬件的信息。
-bash/zsh: dmidecode command not found # Windows (WSL2) sudo apt-get update sudo apt-get install dmidecode # Debian apt-get install dmidecode # Ubuntu apt-get install dmidecode # Alpine apk add dmidecode # Arch Linux pacman -S dmidecode # Kali Linux apt-get install dmidecode # CentOS yum install dmidecode # Fedora dnf install dmidecode # Raspbian apt-get install dmidecode # Dockerfile dockerfile.run/dmidecode # Docker docker run cmd.cat/dmidecode dmidecode
dmidecode 是一个 DMI table 的 decoder。根据 SMBIOS / DMI 标准报告有关 BIOS 中描述的系统硬件信息。 这些信息通常包括系统制造商、型号名称、序列号、BIOS 版本、资产标签以及许多其他详细信息，这些详细信息的程度取决于制造商。 包括 CPU 插槽、扩展插槽（例如 AGP、PCI、ISA）和内存模块插槽的使用状态，以及 I/O 端口列表（例如串行、并行、USB）。
DMI 数据可用于根据特定硬件启用或禁用内核代码的特定部分。 因此，dmidecode 的用途之一是让内核开发人员检测系统“签名”并在需要时将其添加到内核源代码中。Dmidecode 最初由 Alan Cox 编写，然后进一步开发，目前由 Jean Delvare 再次维护，Anton Arapov 临时维护了 5 年。 它是根据通用公共许可证（GPL）发布的。 有关更多详细信息，您应该查看源代码附带的作者和许可证文件。
请注意，DMI 数据已被证明太不可靠，不要盲目信任。 Dmidecode 不会扫描您的硬件，它只报告 BIOS 告诉它的内容。
dmidecode [OPTIONS]
-d, --dev-mem FILE
Read memory from device FILE (default: /dev/mem)
-q, --quiet
Be less verbose. Unknown, inactive and OEM-specific entries are not displayed. Meta-data and handle references are hidden.
-s, --string KEYWORD
Only display the value of the DMI string identified by KEYWORD. KEYWORD must be a keyword from the following list: bios-vendor, bios-version, bios-release-date, bios-revision, firmware-
revision, system-manufacturer, system-product-name, system-version, system-serial-number, system-uuid, system-family, 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. Each keyword corresponds to a given DMI type and a given offset within this entry type. Not all strings may be meaningful or even defined on all
systems. Some keywords may return more than one result on some systems (e.g. processor-version on a multi-processor system). If KEYWORD is not provided or not valid, a list of all
valid keywords is printed and dmidecode exits with an error. This option cannot be used more than once.
Note: on Linux, most of these strings can alternatively be read directly from sysfs, typically from files under /sys/devices/virtual/dmi/id. Most of these files are even readable by
regular users.
-t, --type TYPE
Only display the entries of type TYPE. TYPE can be either a DMI type number, or a comma-separated list of type numbers, or a keyword from the following list: bios, system, baseboard,
chassis, processor, memory, cache, connector, slot. Refer to the DMI TYPES section below for details. If this option is used more than once, the set of displayed entries will be the
union of all the given types. If TYPE is not provided or not valid, a list of all valid keywords is printed and dmidecode exits with an error.
-H, --handle HANDLE
Only display the entry whose handle matches HANDLE. HANDLE is a 16-bit integer.
-u, --dump
Do not decode the entries, dump their contents as hexadecimal instead. Note that this is still a text output, no binary data will be thrown upon you. The strings attached to each entry
are displayed as both hexadecimal and ASCII. This option is mainly useful for debugging.
--dump-bin FILE
Do not decode the entries, instead dump the DMI data to a file in binary form. The generated file is suitable to pass to --from-dump later.
--from-dump FILE
Read the DMI data from a binary file previously generated using --dump-bin.
--no-sysfs
Do not attempt to read DMI data from sysfs files. This is mainly useful for debugging.
--oem-string N
Only display the value of the OEM string number N. The first OEM string has number 1. With special value "count", return the number of OEM strings instead.
-h, --help
Display usage information and exit
-V, --version
Display the version and exit
Options --string, --type, --dump-bin and --oem-string determine the output format and are mutually exclusive.
The SMBIOS specification defines the following DMI types: 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 Access 31 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 Additionally, type 126 is used for disabled entries and type 127 is an end-of-table marker. Types 128 to 255 are for OEM-specific data. dmidecode will display these entries by default, but it can only decode them when the vendors have contributed documentation or code for them.
Keywords can be used instead of type numbers with --type. Each keyword is equivalent to a list of type numbers: 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
dmidecode 显示所有 DMI 表内容：
sudo dmidecode
dmidecode 显示BIOS版本：
sudo dmidecode -s bios-version
dmidecode 显示系统的序列号：
sudo dmidecode -s system-serial-number
dmidecode 显示BIOS信息：
sudo dmidecode -t bios
dmidecode 显示CPU信息：
sudo dmidecode -t processor sudo dmidecode -t 4 # 4 -> CPU
dmidecode 显示内存信息：
sudo dmidecode -t memory