#!/bin/bash
#Filename: remove_duplicates.sh
#Description:  Find and remove duplicate files and keep one sample of each file.

 ls -lS | awk 'BEGIN { 
getline;getline; 
name1=$8; size=$5 
 } 
{ name2=$8; 
if (size==$5) 
{ 

"md5sum "name1 | getline; csum1=$1; 
"md5sum "name2 | getline  ;csum2=$1 ;
 if ( csum1==csum2 ) 
{print name1; print name2 } 

}; 
 size=$5; name1=name2; 
 }' | sort -u > duplicate_files 


cat duplicate_files | xargs -I {} md5sum {} | sort | uniq -w 32 | awk '{ print "^"$2"$" }' | sort -u >  duplicate_sample

echo Removing..
comm duplicate_files duplicate_sample  -2 -3 | tee /dev/stderr | xargs rm --
echo Removed duplicates files successfully.