It’s possible you will receive this warning when trying to update all of your Brew packages.

Warning: Skipping fdupes: most recent version 1.6.1 not installed

How to fix

  1. Open up your terminal.
  2. Unlink fdupes with: brew unlink fdupes
  3. Install the latest fdupes version with: brew install fdupes
  4. Go to the fdupes folder with: cd /usr/local/Cellar/fdupes
  5. Remove all other versions than 1.6.1 with : rm -rf <INSERT_FOLDER_VERSION>

Now the warning is solved.