OK, I have a script that looks at logs to build weekly usage stats. It's called from cron every Sunday, then on the last Sunday I clear out the results for the next month. Right now I have two scripts running from cron. The second is responsible for deleting the monthly data. The problem comes from the fact that if the accounting script doesn't finish before the cleaner, the data gets canned. I know there are a lot of ways to fix this, but I'd like to make a single script that can check to see if it's the last Sunday in a month and delete said data after the accounting subs. Since cron doesn't offer this granularity I'll be able to use this elsewhere hence me wanting to do it this way.
Any tips?