How to trigger alert based on search not found?

[DotTest37]

I have been using "alerts to email" for a while already,, now I need to create an alert that triggers if a particular message is not seen on certain period.
Basically, I get a confirmation on Splunk via syslog after a script runs on one of my servers, and I need Splunk to tell me if the script didnt run on a particular day.

Thanks

[steven7537]

If you create your search as a scheduled/saved search, you can tell it to run every hour/day whatever. You can also tell it to send you an email if the results are equal to, greater than, less than, a certain number, i.e 0. You can also set how many times it triggers and alerts this email per search.

[carasso]

"... | stats count | search count=0"