#!/bin/bash

# Check if the correct number of arguments are provided
if [ "$#" -ne 2 ]; then
    echo "Usage: $0 <src_dir> <dst_dir>"
    exit 1
fi

src_dir="$1"
dst_dir="$2"

# Check if source directory exists
if [ ! -d "$src_dir" ]; then
    echo "Source directory '$src_dir' not found."
    exit 1
fi

# Check if destination directory exists, if not, create it
if [ ! -d "$dst_dir" ]; then
    mkdir -p "$dst_dir"
fi

# Iterate over files in source directory
for file in "$src_dir"/*; do
    # Check if the file is a regular file
    if [ -f "$file" ]; then
        # Check if destination file already exists
        if [ -f "$dst_dir/$(basename "$file")" ]; then
            echo "File $(basename "$file") already exists in destination directory."
            continue
        fi
        # Extract file name without path
        filename=$(basename "$file")
        # Create hardlink in destination directory
        ln "$file" "$dst_dir/$filename"
        echo "Created hardlink for $filename"
    fi
done

echo "Hardlink creation completed."