Flatten dirs

flatten-dirs.sh

#!/bin/bash

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

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

# Convert to absolute path
target_dir=$(realpath "$1")

# Find all files in subdirectories and move them to root
find "$target_dir" -type f -mindepth 2 | while read -r file; do
    filename=$(basename "$file")
    dest="$target_dir/$filename"
    
    # Handle filename conflicts
    counter=1
    while [ -f "$dest" ]; do
        base="${filename%.*}"
        ext="${filename##*.}"
        if [ "$base" = "$ext" ]; then
            # File has no extension
            dest="$target_dir/${base}_${counter}"
        else
            # File has extension
            dest="$target_dir/${base}_${counter}.${ext}"
        fi
        ((counter++))
    done
    
    # Move the file
    mv "$file" "$dest"
    echo "Moved: $file -> $dest"
done

# Remove empty directories
find "$target_dir" -type d -mindepth 1 -empty -delete

echo "Directory structure flattened"