syslog-summary 1.14-2.1 (amd64 binary) in ubuntu focal

 This program summarizes the contents of a log file written by syslog,
 by displaying each unique (except for the time) line once, and also
 the number of times such a line occurs in the input. The lines are
 displayed in the order they occur in the input.
 .
 It is also possible to define some "ignore rules" using regular
 expressions.