How do you incorporate the following regex into a search?

[nls7010]

How can I get this in a regex that I can use in Splunk?

/[^aA-zZ].[0-9].log

I need to create an alert that looks at /home///log/*** and picks up only what matches the above string.

How can I put that in a search in Splunk?

[michael_schmidt]

Try this:

source=/home///log/*| rex field=source "(?P[^aA-zZ].[0-9].log)"

Regardless, the command you need is the rex field=fieldname"regex_goes_here" part to get the regex working within the search.

https://docs.splunk.com/Documentation/Splunk/7.2.3/SearchReference/Rex