Duplicate File Checker

Multiple settings: Cautious, Sensible, Aggressive, Automatic, Custom.

Program which scans over a filesystem and creates a tree of checksums, and performs operations depending on the values.

Under 'cautious', lists all suspected duplicates (within 10% variance or so between sums) and allows the user to perform any actions like deletion, comparison, etc.

Under 'Sensible', prepares any exact duplicates to be deleted and lists any within a variance

Under Aggressive, deletes any exact duplicates and preps all within a variance to be deleted

Under Automatic, marks all within a certain range and then does a byte-for-byte comparison of each file with its suspected duplicate. Identical copies are deleted, near identical copies can be deleted or listed.

Under Custom, all options are user settable.

Could be run on two specific files, a folder, a number of CTRL+clicked files, or a whole filetree.

Let's see if it exists already