import sys

def pem_to_oneline(filename):
    with open(filename, 'r') as f:
        content = f.read().strip()
    
    # Replace actual newlines with literal \n
    oneline = content.replace('\n', '\\n')
    return oneline

if __name__ == "__main__":
    filename = sys.argv[1] if len(sys.argv) > 1 else 'snowflake_key.pem'
    result = pem_to_oneline(filename)
    print(result)