Find case collisions of files in directory and subdirectories

case.sh

#!/bin/bash
for dir in $(find $1 -type d)
do
  cd $dir
  for file in $(find . -maxdepth 1 -type f | tr '[A-Z]' '[a-z]'| sed "s#./##" | sort -u)
  do
      if [ $(ls|grep -iwc $file) -gt 1 ]
      then
         echo "$dir"
         ls|grep -iw $file
      fi
  done
done