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Automation & scripting

CLI tools, scheduled jobs, filesystem tasks, and glue scripts that save time.

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Automation & scripting easy

Mock Certbot Renewal in Python for Testing

Simulates a Let's Encrypt certificate renewal by writing a mock certificate file and printing realistic certbot CLI output, without calling the actual certbot.

certbot letsencrypt automation
Python 
import subprocess
import sys
from datetime import datetime, timedelta
from pathlib import Path


def renew_cert(domain: str, output_dir: str = "certs") -> str:
    """Simulate a Let's Encrypt renewal with mock certbot output."""
    out = Path(output_dir)
    out.mkdir(parents=True, exist_ok=True)

    cert_path = out…
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