Logwatch show (many) dynamic generated files in only one services

what i want to do is:
monitor the content (Strings like : "error or “failed”) of dynamically generated files… a lot of files, maybe hunderts or more…in diffrent paths…
for example : /roo/DB2*.txt and /root/DB/*.log and so one… it should be only one check and should show in the datails the exact path of the file he found the string (“error”) in. same as the above shown picture (from filestat plugin output)