The Unix find utility recursively searches through the directory hierarchy; the Perl glob built-in does not.

The Perl core module, File::Find, is similar to Unix find in that it does a recursive search.

You are right: as of 5.10.0, File::Util is not a core module.

Another module to consider is File::Find::Rule, which has a simpler interface, IMO, than File::Find, although it is not a core module.

The answer might also depend on what you plan to do with the list of files, once you have that list.