Reference library

Automation & scripting

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

4 matches

Sponsored Reserved space — layout preview until AdSense is connected

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…

4 0 Open

Automation & scripting medium

Find and Delete Duplicate Files Using Hashing in Python

Walk a directory tree, compute SHA256 hashes for every file, and delete duplicates that share the same hash.

deduplication files hashing

Python

import hashlib
import os
from pathlib import Path

def file_hash(path, block_size=65536):
    """Return SHA256 hash of file content."""
    hasher = hashlib.sha256()
    with open(path, 'rb') as f:
        while chunk := f.read(block_size):
            hasher.update(chunk)
    return hasher.hexdigest()

def find_and_d…

5 0 Open

Automation & scripting medium

How to Monitor Website Content Changes in Python

This script fetches a webpage's content, computes its SHA-256 hash, and compares it with the last stored hash to detect and alert on changes.

web scraping monitoring requests

Python

import time
import hashlib
import requests
from pathlib import Path

def fetch_content_hash(url: str) -> str:
    response = requests.get(url, timeout=10)
    response.raise_for_status()
    return hashlib.sha256(response.text.encode()).hexdigest()

def monitor_website(url: str, check_interval: int = 60):
    hash_fil…

7 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…

2 0 Open

Browse by section

Each section groups closely related Python snippets.