I want to make a virtual file system from a few folders and want to check if there are any conflicting files. So I want to provide a few folders and get files with the same path relative to their folders.

How can I find the conflicts?

#!/usr/bin/env bash

# Find conflicting paths in multiple folders to use with mergerfs
# Usage: ./conflict.sh /path/to/folder1 /path/to/folder2 /path/to/folder3 > conflicts.txt

find_conflicting_files() {
    local folders=("$@")
    local files=()

    if [[ ${#folders[@]} -lt 2 ]]; then
        echo "Please provide at least 2 folders"
        exit 1
    fi

    for folder in "${folders[@]}"; do
        files+=("$(find "$folder" -type f)")
    done

    # find all conflicting files

    # print the conflicting files
    for conflict in "${conflicts[@]}"; do
        echo "$conflict"
    done