Add multiple show running config files into a folder and use Grep to pick out specific areas of interest that are hits in those files.
Results will include the files name where there is a match.
Useful Grep options:
grep -A 2 “interface loop” *
grep “ip-source-address” *
grep “ip route pref” *
-A After (2 lines)
-i Case insensitive
-l Display filenames that match
* Wildcard for all files in current directory.