separate images raw files and jpg files

sep.sh

#!/usr/bin/env bash

# set -x #DEBUG - Display commands and their arguments as they are executed.
# set -v #VERBOSE - Display shell input lines as they are read.
# set -n #EVALUATE - Check syntax of the script but don't execute.

# -------------------------------------------------
# Create by:    Kamontat Chantrachirathumrong
# -------------------------------------------------
# Version:      0.0.1  -- finish
#               1.0.0  -- refactor code
# -------------------------------------------------

location="$1"
# default location is current dir
test -z "$location" && location="$PWD"

# check location
[ -d "$location" ] || exit 1
cd "$location" || exit 2

get_extension() {
    extension="${1##*.}"
    filename="${1%%.*}"
    
    export EXTENSION="$extension"
    export FILENAME="$filename"
}

postfix="_folder"

for file in "$location"/*; do
    get_extension "$file"
    folder="${EXTENSION}${postfix}"
    # create folder if not exist
    ! test -d "${PWD}/${folder}" && 
        mkdir "${PWD}/${folder}"  2>/dev/null
    printf "move $file => $folder  "
    mv "$file" "${PWD}/${folder}/" &&
        echo "COMPLETED" ||
        echo "ERROR"
done