Move jpeg files to a subfolder if an identical named RAW faile exists. Rename CR2 to particular RAW

rm_jpg.sh

#!/bin/bash

ls -1 *.JPG | while read filename; do
        extension="${filename##*.}"
        filename="${filename%.*}"
        if [ -f "${filename}.CR2" ]; then
                #echo "${filename}"
                mkdir -p t
                mv "${filename}.JPG" t/
        fi