HP-UX Event ManagerAdministrator's Guide

Introduction
Event Manager Events
Chapter 130
The command-line utilities are designed to be used together in pipelines.
For example, you may pipe a set of events from a file in to the sort utility,
pipe the output in to the formatting utility, pipe the output of that
command in to the more command, or redirect it to a file. The “Using
Event Manager” on page 31 provides examples of using commands to
monitor and review event activity.
After the event file is converted to text form, you can use other standard
utilities to analyze it. For example, you may display just the event
names, and then pipe the display into the sort -u and wc -l commands
to determine how many different types of events are in the file.