All the patterns described so far are for matching input records.
END special patterns are different.
They supply startup and cleanup actions for
END rules must have actions; there is no default
action for these rules because there is no current record when they run.
END rules are often referred to as
END blocks” by long-time
|• Using BEGIN/END:||How and why to use BEGIN/END rules.|
|• I/O And BEGIN/END:||I/O issues in BEGIN/END rules.|