${SOLR_ROOT}/bin/solr status

Here's the output of running this command on my localhost where I have 2 Solr instances and 3 ZooKeeper instances.
The Solr instances are running on the same host, using the same Solr binary distribution.

Found 2 Solr nodes:

Solr process 9152 running on port 8983
{
  "solr_home":"/opt/solr/solr1",
  "version":"7.6.0",
  "startTime":"2016-07-02T22:42:00.720Z",
  "uptime":"0 days, 0 hours, 28 minutes, 2 seconds",
  "memory":"55.5 MB (%11.3) of 490.7 MB",
  "cloud":{
    "ZooKeeper":"localhost:2181,localhost:2182,localhost:2183/solr",
    "liveNodes":"2",
    "collections":"1"
  }
}

Solr process 9330 running on port 8984
{
  "solr_home":"/opt/solr/solr2",
  "version":"7.6.0",
  "startTime":"2016-07-02T22:42:40.192Z",
  "uptime":"0 days, 0 hours, 27 minutes, 23 seconds",
  "memory":"39.1 MB (%8) of 490.7 MB",
  "cloud":{
    "ZooKeeper":"localhost:2181,localhost:2182,localhost:2183/solr",
    "liveNodes":"2",
    "collections":"1"
  }
}