def METHOD_NAME(from_file, to_file):
    """ link_file(from_file, to_file)
    - function to check if a path exists, and if not, make a symlink
    input: from_file - string path
            to_file   - string path
    """
    import os
    if not os.path.exists(to_file):
        if not os.path.islink(to_file):
            os.symlink(from_file, to_file)
        else:
            print(to_file + " exists, unlinking.")
            os.unlink(to_file)
            os.symlink(from_file, to_file)
        print("ln -s " + from_file + " " + to_file)