zad3.sh

#!/bin/bash

if [ ! $# -eq 3 ]
then
   echo "USAGE: `basename $0` /home/user/source /home/user/destination /home/asistent/log.txt"
   exit 2
fi

if [ ! -d $1 ]
then
   echo "Source directory does not exist! Exiting..."
   exit 2
fi

if [ ! -d $2 ]
then
   echo "Creating destination directory..."
   mkdir $2
else
   echo "Deleting destination directory and crating new one..."
   rm -r $2
   mkdir $2
fi

if [ ! -f $3 ]
then
   echo "Creating log file... ($3)"
   touch $3
else
   rm $3
   touch $3
fi

# first arg => first file
# second arg => second file
function FilesAreSame() {
   if [ `grep -xvFf $1 $2 | wc -l` -eq 0 ]
   then
      echo "true"
   else
      echo "false"
   fi
}

files=`find $1 -type f`

for file in $files
do
   if [ $file = $1 ]
   then
        continue
   fi
   fileName=`echo $file | sed 's/\//__/g'`
   filesToCheckWith=`find $2 -type f`
   for fileToCheck in $filesToCheckWith
   do
      if [ `FilesAreSame $file $fileToCheck` = "true" ]
      then
         echo "$file === $fileToCheck" >> $3
      fi
   done
   cp $file $2/$fileName
done