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Automation & scripting

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

3 matches

Find Sensitive Information in Log Files with Python

Scan log files for emails, IP addresses, API keys, and passwords using regular expressions in Python.

import re
import os
from pathlib import Path

def find_sensitive_info(log_path):
    """Scans log files for patterns like emails, IPs, API keys, and passwords."""
    patterns = {
        'Email': r'[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}',
        'IP Address': r'\b(?:\d{1,3}\.){3}\d{1,3}\b',
        'API Key'…

37 0 Open

Automation & scripting easy

How to Write an IP Block List to hosts.deny in Python

This Python script validates a list of IP addresses and CIDR ranges, then writes them to a hosts.deny file to block connections at the TCP wrapper level.

hosts.deny ip-block ipaddress

Python

from ipaddress import ip_network

def write_hosts_deny(ip_list, output_file="hosts.deny"):
    with open(output_file, "w") as f:
        for ip in ip_list:
            try:
                ip_network(ip)
                f.write(f"ALL: {ip}\n")
            except ValueError:
                continue
    print(f"Written…

14 0 Open

Automation & scripting easy

Parse nginx access log top IPs in Python

Reads an nginx access log line by line, extracts the client IP, and returns the most frequent IPs using a regex and Counter.

nginx log parsing regex

Python

import re
from collections import Counter

def top_ips(log_file, n=10):
    ip_pattern = re.compile(r'^(\S+)')
    ip_counts = Counter()

    with open(log_file, 'r') as f:
        for line in f:
            match = ip_pattern.match(line)
            if match:
                ip_counts[match.group(1)] += 1

    return…

14 0 Open

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