Get top-level physical processor numbers grouped by socket and core id's

group_cpuinfo_by_socket-core-ids.sh

egrep -e "processor" -e "core id" -e ^physical /proc/cpuinfo | \
  xargs -l3 echo | \
  awk -vOFS='\t' '{ print "{\"socket\": "$7", \"core\": " $11 ", \"proc\":" $3 "}" }' | \
  jq -sc '
    [.[] | {sock_core:"\(.socket)-\(.core)", proc, core, socket } ] 
    | group_by(.sock_core) | .[] | .[0] ' | \
  sort -V

output.json

/*example output*/
{"sock_core":"0-0","proc":0,"core":0,"socket":0}
{"sock_core":"0-1","proc":4,"core":1,"socket":0}
{"sock_core":"0-2","proc":8,"core":2,"socket":0}
{"sock_core":"0-3","proc":12,"core":3,"socket":0}