Installation Method
`dmidecode` may not be installed by default on most Linux systems. You can install it using the command below.
Debian/Ubuntu
sudo apt-get install dmidecodeUses the APT package manager.
CentOS/Fedora/RHEL
sudo yum install dmidecode
# or
sudo dnf install dmidecodeUses the YUM or DNF package manager.
Key Options
These are the core options of `dmidecode` that allow you to filter and output various hardware information.
1. Basic Query
Generated command:
Try combining the commands.
Description:
`dmidecode` Executes the command.
Combine the above options to virtually execute commands with AI.
Key Usage Examples
Practical examples of using the `dmidecode` command to check system information.
Check Motherboard Information
sudo dmidecode -t baseboardChecks the manufacturer, product name, serial number, etc., of the motherboard.
Check BIOS Information
sudo dmidecode -t biosChecks the vendor, version, release date, etc., of the BIOS.
Check Memory (RAM) Slot Information
sudo dmidecode -t memoryChecks total memory capacity, number of slots, and type and speed of RAM installed in each slot.
Check CPU Information
sudo dmidecode -t processorChecks the manufacturer, model name, maximum speed, etc., of the CPU.
Cautions
Points to consider when checking DMI information.
Characteristics of DMI Information
`dmidecode` reads DMI information recorded in the hardware itself, so the output information may differ in a virtualized environment (VM) compared to a physical server. It may show information about the virtual hardware assigned to the virtual machine.
- Commands usually need to be executed with `sudo` privileges.
- In virtual machines, it may display differently from actual hardware information.
- Using `less` or `grep` can be convenient due to the large amount of output information.
Example of Searching for Specific Information
sudo dmidecode | grep "Manufacturer"You can quickly find specific manufacturers or model names using `grep`.