#!/usr/local/bin/bash
#  rename.sh:


SUFFIX=JPG                      # New filename suffix.

if [ -n "$1" ]
  then
    directory=$1                # If directory name given as a script argument...
  else
    directory=$PWD              # Otherwise use current working directory.
fi

for file in $directory/*        # Filename globbing.
do
  filename=${file%.JPG}         # look for .jpg extent

  mv $filename.JPG $filename.jpg

  echo "$filename.$SUFFIX"      # Log what is happening to stdout.
done
mv *.jpg test

exit 0