import argparse

def sort_file(file_path):
    with open(file_path, 'r') as file:
        lines = file.readlines()

    lines.sort()

    with open(file_path, 'w') as file:
        file.writelines(lines)

    print(f"The lines in {file_path} have been sorted.")

def main():
    parser = argparse.ArgumentParser(description='Sort lines in a text file.')
    parser.add_argument('file', nargs='?', help='Path to the text file to be sorted')

    args = parser.parse_args()

    if args.file:
        file_path = args.file
    else:
        file_path = input("Enter the path to the text file: ")

    sort_file(file_path)

if __name__ == "__main__":
    main()