Scenario 1
Suppose you want to collect log files saved with succeeding numbers they reach a certain size; for example:
IAS0.log
IAS1.log
IAS2.log
Rollover pattern: In this scenario, you can specify the rollover pattern as IAS?.log.
Scenario 2
Suppose you want to collect log files that roll over every hour and are saved with the same date but a different time stamp in the YYYY-MM-DD-HH format; for example:
2013-10-01-11 .log
2013-10-01-12.log
2013-10-01-13.log
Rollover pattern: In this scenario, you can specify the rollover pattern as 2013-10-01-*.log or 2013-10-01-??.log.
In this scenario, if you are sure that exactly two digits at the end of timestamp are likely to change, then you can specify the ?? wildcard sequence to capture exactly two changing digits. Otherwise, specifying a single asterisk is recommended.
