libgrok1 1.20110708.1-4.3ubuntu1 (s390x binary) in ubuntu bionic

 The grok library provides the pattern matching features of grok in
 your own tools. There are currently C and Ruby APIs.
 .
 Grok is simple software that allows you to easily parse logs and
 other files. With grok, you can turn unstructured log and event data
 into structured data.