I'm a Perl novice and I'm trying to figure out the following: How do I get at all the files in a given directory AND in all of its subdirectories? I want to open each one of them, do some things to ...

I have a program currently written in Perl that checks the values of about 2gb worth of tab-delimited text files (files vary in size from about 10mb to 500mb). Every value of every file is checked ...