Removes duplicate files in the current working directory when their hash matches exactly

delete-duplicate-files.sh

#!/bin/bash

declare -A file_hashes

for file in *; do
    if [[ -f $file ]]; then
        hash=$(sha256sum "$file" | awk '{print $1}')
        if [[ ${file_hashes[$hash]} ]]; then
            echo "Deleting duplicate file: $file"
            rm -i "$file"
        else
            file_hashes[$hash]=1
        fi
    fi
done