recurse_randomizer.sh

#!/bin/bash

# Function to generate a random string of characters
generate_random_string() {
    cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 8 | head -n 1
}

# Function to recursively rename files and directories
rename_files_and_dirs() {
    local path="$1"
    # Find all files and directories in the path, from deepest to shallowest
    find "$path" -depth -type d -o -type f | while read -r filename; do
        local dirpath=$(dirname "$filename")
        local base=$(basename "$filename")
        local newname=""

        # Check if it is a file with an extension
        if [[ "$base" == *.* ]]; then
            local ext="${base##*.}"
            newname="$(generate_random_string).$ext"
        else
            newname="$(generate_random_string)"
        fi

        # Ensure the new filename does not already exist
        while [[ -e "$dirpath/$newname" ]]; do
            newname="$(generate_random_string)"
            if [[ "$base" == *.* ]]; then
                newname="$newname.$ext"
            fi
        done

        mv -n "$filename" "$dirpath/$newname"
    done
}

# Start renaming from the specified directory or the current directory if none specified
TARGET_DIR=${1:-.}
rename_files_and_dirs "$TARGET_DIR"