Duplicate File Remover in Python

Install pyhon-tk package for the GUI
sudo apt-get install python-tk
Make the script executable
chmod +x script_name
Tested on Ubuntu 11.10 & Ubuntu 12.04

Download Location: Download

Duplicate File Remover for Linux/Unix in PHP

Usages:
$removeFile = new DuplicateFileRemover($dir);
# $dir = "/home/username/Videos"
$removeFile->remover(); #remove duplicate files if permitted
$md5sum_value = $removeFile->getMd5str();
#Provides md5 values of all the files
Download Location: Download