C:\Program Files\Elastic\Elasticsearch\logstash-6.4.0\logstash-6.4.0\bin>logstas
h.bat agent -f ..\conf
ERROR: Unknown command 'agent'
See: 'bin/logstash --help'
[ERROR] 2018-08-26 18:29:55.009 [main] Logstash - java.lang.IllegalStateExceptio
n: Logstash stopped processing because of an error: (SystemExit) exit
indent preformatted text by 4 spaces