How to find the number of physical cpus, cpu cores, and logical cpus

Solution Verified - Updated -

Issue

  • What's the difference between physical CPUs, CPU cores, and logical CPUs on an x86/x86_64 system?
  • How to get the list of available processors from the RHEL operating system?

Environment

  • Red Hat Enterprise Linux 4
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

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