npm install express child_process
npm start


builder@node0:~/pinger$ curl http://localhost:3334/ping_times | jq
{
  "average": 946,
  "median": 1003,
  "pingTimes": [
    602,
    802,
    602,
    1204,
    1004,
    1406,
    1003
  ]
}