This is the second novice challenge. I’ll give you some problem which you should be able to solve with just the stuff we present in Learning Perl (including using modules, so, most of Perl). A week or so later, I’ll post a solution.
For this one, given a single directory of files containing possible duplicated files, find the files that might be duplicates. You only need to print the duplicated files and print their names. If you want to remove the duplicated files, ensure that you have a backup!
There are some modules that might be helpful:
If you are especially motivated, also search through any subdirectories that you find.