#!/bin/bash

SOURCE=/home/ssanders/Sandbox/addrive/backup_images/source
TARGET=/home/ssanders/Sandbox/addrive/backup_images/target

cd "$SOURCE"

find . -type f \( -name '*.jpg' -or -name '*.jpeg' -or -name '*.JPG' -or -name '*.JPEG' -or -name '*.gif' -or -name '*.GIF' \) -exec echo 'Backing up: {}' \; -exec rsync -trRv '{}' "$TARGET" \;