#!/bin/bash

# Function to check attachments in a file
check_attachments() {
    local file="$1"
    # Use mkvinfo to get the details of the file, specifically looking for 'attachments'
    if ! mkvmerge -i "$file" | grep -q "Attachment"; then
        # If there are no attachments, print the filename
        echo "$file"
    fi
}

# Export the function so it can be used with find
export -f check_attachments

# Recursively find all .mkv files and check for attachments
find . -type f -name "*.mkv" -exec bash -c 'check_attachments "$0"' {} \;