Find duplicate files on Windows and on Mac

How to find duplicate files

Our CrcCheckCopy is a software that can search and find duplicate files in your computer folders or disks.

It will not search for duplicate files based on the filename of the files (search for files having the same filename).

In fact, it will ignore the filename and look only at the file size of your files and their exact contents.

This guarantees that if you have copies of a file under a different filename, our duplicate finder software will detect them.

CrcCheckCopy is a duplicate files finder command-line utility that is available for Windows and MacOS. Read below how to use it at each system.

How to find duplicate files on Windows

1. Download CrcCheckCopy
2. Open the Windows command prompt by running "cmd" (without the quotes) from the Start menu.
3. At the command prompt switch to the folder where you stored CrcCheckCopy when you downloaded it.
4. To start the search for duplicate files, type the command:
   

   CrcCheckCopy /d folder-to-scan-for-duplicate-files

How to find duplicate files on Mac

1. Download CrcCheckCopy
2. Open the MacOS Terminal by typing "terminal" in the MacOS search.
3. At the Terminal switch to the folder where you stored CrcCheckCopy when you downloaded it.
4. To start the search for duplicate files, type the command:
   

   ./CrcCheckCopy /d folder-to-scan-for-duplicate-files

The utility with scan the folder and find the duplicate files.

It will also save the results in a plain text file. This file can be parsed by other programs, in case you want to automate your recurring tasks.