Search for duplicate files with ease. Doopfinder can help you search directories for duplicate files. One interesting feature this tool offers is the fact that you can create a text file index of the files it finds.

Comand Line:
Use -l to create a list of files to find.
Use -f to find duplicate files in a created list.
doopfinder -l list.txt - c:\dir\ :Create a text file index.
doopfinder -f list.txt - c:\found\ :Search an index; save results in a folder.
View the README for more information.

The license of this software is Free, you can free download and free use this disk cleanup software.