#!/bin/bash

set -o errexit -o nounset -o pipefail

cpuinfo_linux() {
  which lscpu >/dev/null && lscpu
}

cpuinfo_mac() {
  which sysctl >/dev/null && sysctl -a | grep '^machdep.cpu.'
}

cpuinfo_windows() {
  which powershell >/dev/null && \
      powershell -Command Get-WmiObject -Class Win32_Processor
}

cpuinfo_linux || cpuinfo_mac || cpuinfo_windows