elasticsearch --version

elasticsearch --version
command terminated with exit code 137

elasticsearch --version
...
Version: 6.6.1, Build: default/tar/1fd8f69/2019-02-13T17:10:04.160291Z, JVM: 11.0.2

Related

• SIGKILL

See also

• Elasticsearch, installation, ELK, Elastic X-Pack, elasticsearch.yml, logs, ECK, Elasticsearch curl URLs, Elastisearch REST APIs, /_cat/, /_cluster/, /_xpack/, QueryShardException, Elasticsearch index, ELK backup and restore, elasticsearch-cli, Elasticsearch versions, ElasticSearch Snapshot Lifecycle Management (SLM), Low disk watermark, Elasticsearch storage, Elasticsearch users, Elasticsearch roles, search context, shards, Elastic Cloud, Elastic Licensing, ElasticSearch alerts, ESQL

https://kb.objectrocket.com/elasticsearch/how-to-check-your-elasticsearch-version-from-the-command-line