Reference library

Automation & scripting

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

4 matches

Build a Python Utility That Verifies Backup Integrity Automatically

Automatically compute and verify SHA-256 checksums of backup files using a JSON manifest to detect missing or corrupted data.

sha256 backup integrity

Python

import hashlib
import os
import json

def compute_checksum(filepath, algorithm='sha256'):
    """Compute checksum for the given file."""
    hash_func = hashlib.new(algorithm)
    with open(filepath, 'rb') as f:
        for chunk in iter(lambda: f.read(4096), b''):
            hash_func.update(chunk)
    return hash_f…

53 0 Open

Automation & scripting medium

How to Monitor USB Device Connections in Python

A Python utility that monitors USB device connections and disconnections by comparing output of the lsusb command at regular intervals.

usb monitoring subprocess

Python

import time
import subprocess
import os

def get_usb_devices():
    """Return list of currently connected USB devices (Linux)."""
    try:
        result = subprocess.run(['lsusb'], capture_output=True, text=True, check=True)
        return result.stdout.strip().split('\n')
    except (subprocess.CalledProcessError, F…

43 0 Open

Automation & scripting medium

How to Validate SSL Certificates for Multiple Domains in Python

A Python utility that checks SSL certificate expiry dates for a list of domains using the standard library ssl and socket modules.

ssl certificate validation

Python

import ssl
import socket
from datetime import datetime

def check_ssl_certificate(hostname: str, port: int = 443) -> dict:
    """Validate SSL certificate for a given hostname."""
    context = ssl.create_default_context()
    with socket.create_connection((hostname, port), timeout=5) as sock:
        with context.wra…

45 0 Open

Automation & scripting medium

Track File Changes with Version History in Python

A Python utility that monitors a file for changes, creating versioned backups with SHA-256 hashing to detect modifications and store a local JSON history.

file-monitoring versioning automation

Python

import hashlib, json, os, shutil, time
from pathlib import Path

class FileTracker:
    def __init__(self, history_file="file_history.json"):
        self.history_file = Path(history_file)
        self.history = self._load_history()

    def _load_history(self):
        if self.history_file.exists():
            retur…

38 0 Open

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