Removing Duplicated File Automatically

It's annoying to have two or more of the same file laying around in your hard drive. Out of curiosity, I devised a small script to automate the process of finding and deleting duplicated file in two different directories. This is it.

#!/bin/bash
#
# This script checks whether there is a file duplication 
# in two different directrories and deletes the one in 
# ${SRC_DIR} if it found the same file
#

SRC_DIR="/home/darmawan/download"
DST_DIR="/home/sources"
TMP_FILENAMES="__filenames.txt"
CUR_FILE=""
DST_FILE=""
RESULT=""

find ${SRC_DIR} -type f  > ${TMP_FILENAMES} 

while read LINE
do
 unset RESULT
 unset CUR_FILE

 CUR_FILE=$(basename "${LINE}")
 #find ${DST_DIR} -type f -name "${CUR_FILE}" -exec diff -q "${LINE}" '{}' ';'
 RESULT=$(find ${DST_DIR} -type f -name "${CUR_FILE}" -print)  
 
 if [ "${RESULT}" != "" ] ; then 
      echo "File of the same name found at ${LINE} and ${RESULT}" ;
      echo "Diffing.."
      diff -q ${LINE} ${RESULT}

      # If the file differ (diff return value _is_not_0_ ),
      # then print it out, otherwise delete the file in ${SRC_DIR}
      if [ $? -eq 0 ]; then 
       rm -vf ${LINE}
      fi
 fi

done < ${TMP_FILENAMES}

unset LINE
unset FILENAME
unset CUR_FILE
unset DST_FILE
unset RESULT

rm -v ${TMP_FILENAMES}

This is a very rough script. Don't expect robustness out of it.

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