File monitoring for date, size, existance.

We have a couple of scenarios where we would like to monitor a file on a server.

For example we want to monitor the date created on the Virus.Dat file to make sure it is not older than 3 days.

Some products do not write to the event log and instead write to the their own log files. So we might want to monitor for example a mylog.err file and alert if the byte size is more than 0 bytes.

The ability to monitor and alert on the following would be great:

File size

File exist

File create date

File modify date

Thanks!