stedolan

#!/bin/bash

unshared () {
    grep '^[0-9]\+$' "$1" > /dev/null
}

for cpu in $(ls -d /sys/devices/system/cpu/cpu[0-9]* | sort -t u -k 3 -n); do
    echo "${cpu##*/}: [Package #$(cat $cpu/topology/physical_package_id), Core #$(cat $cpu/topology/core_id)]"
    if ! unshared $cpu/topology/core_siblings_list; then
        echo "  same package as $(cat $cpu/topology/core_siblings_list)"