dupefinder

A fast and simple command-line tool to scan directories and find duplicate files based on content, not names.

Features

• Scans directories recursively
• Detects duplicate files using SHA256 hashing
• Optionally include/exclude file extensions
• Export results to JSON with --output
• Colourful terminal output for easier scanning

Installation

As a prerequisite, you should have the latest Go version installed.

git clone https://github.com/anthophobiac/dupefinder.git
cd dupefinder
go install

Usage

dupefinder scan [path] [flags]

Flags:

Flag	Description
--include-ext	Only scan files with these extensions (e.g. .jpg,.txt)
--exclude-ext	Exclude files with these extensions
--output, -o	Write duplicate results to a JSON file

Usage Examples

Scan a directory and show duplicate groups:

dupefinder scan ./Downloads

Only include .mp3 and .flac files:

dupefinder scan ./Music --include-ext=.mp3,.flac

Exclude .log and .tmp files:

dupefinder scan ./Logs --exclude-ext=.log,.tmp

Save results to a JSON file (no console output):

dupefinder scan ./Documents --output=dupes.json

Sample Output

Hashing files  [======================>] 100%
Duplicate group (e3b0c442...):
   ./photos/image1.jpg
   ./backup/image1_copy.jpg

Duplicate group (9a0364b9...):
   ./docs/report.pdf
   ./archive/old_report.pdf