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17.4.16 cpuid

Command: cpuid [-l] [-p]

Check for CPU features. This command is only available on x86 systems.

With the -l option, return true if the CPU supports long mode (64-bit).

With the -p option, return true if the CPU supports Physical Address Extension (PAE).

If invoked without options, this command currently behaves as if it had been invoked with -l. This may change in the future.