cpuid:tldr:42920

cpuid: Display raw hex information with no decoding.

cpuid

$ cpuid -r

try on your machine

The cpuid command with the -r option is used to display information about the CPU (Central Processing Unit) capabilities of a system in a structured manner.

The CPUID instruction is a special instruction in x86 and x86-64 CPUs that provides information about the CPU itself. This instruction retrieves a 32-bit value (referred to as the "feature flags") into the EAX register of the CPU, containing information about various features and capabilities supported by the CPU.

The cpuid -r command executes the CPUID instruction on the current processor and displays the resulting information in a readable format. The output typically includes details such as the CPU vendor, model name, family, stepping, cache sizes, supported instruction sets, and other relevant information.

By using the cpuid command with the -r option, users can gain insights into the hardware capabilities of their system's CPU, which can be useful for system analysis, performance tuning, software development, or simply understanding the features available on their processor.

This explanation was created by an AI. In most cases those are correct. But please always be careful and never run a command you are not sure if it is safe.

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