Script to delete XMPs and other sidecar files in a specified directory, if the base image file does not exist

sidecar_cleanup.sh

#!/bin/bash

# modified from # https://stackoverflow.com/questions/48757748/removing-orphaned-sidecar-files-by-extension

# Check if directory is provided as argument
if [ $# -ne 1 ]; then
    echo "Usage: $0 directory_path"
    exit 1
fi

directory="$1"

# Check if the provided directory exists
if [ ! -d "$directory" ]; then
    echo "Error: Directory '$directory' does not exist."
    exit 1
fi

# Change to the specified directory
cd "$directory" || exit 1

shopt -s nullglob extglob nocaseglob;

# Get all sidecar files
for file in *.{xmp,pts,pp3,dop}
do
  # Generate all permutations of filenames that it may belong to,
  # and let globbing delete the ones that don't exist
  candidates=("${file%.*}"@() "${file%%.*}".{jpg,jpeg,arw,on1,onphoto,raw,nef,raf,orf}@());  # add possible extension types that may be present here
  # echo $candidates

  # If none exist, the file can be deleted
  [[ ${#candidates[@]} -eq 0 ]] && echo "Found orphan $file" # && rm -f $file # uncomment this to actually delete the file
done