Do you really want to use XML::Grove? (If that's what "XML::Parser::Grove" and "XML::Parse::Grove" refer to). It's a very old and very much unmaintained module: the last release dates back to September 1999. XML::LibXML, XML::Simple or XML::Twig would probably be better options (other monks will likely suggest their favorite module ;--).

Also, if you are looking at all nodes and checking filesystem path (I suppose that's what you want to check, your question is not very clear), then depending on how you want to report errors, using regexps would probably be more efficient and just as safe.

Have you read the XML::Parser::Grove documentation? What code have you written so far? How does your input data look, and what elements of it do you need?

If you post a good description of your problem and a small, relevant snippet of your data and the relevant part of the code you have so far that makes it far easier for us to help you.