Open Source & Developer Tooling

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Open source software that powers real production systems, and the macOS tooling that keeps high-output engineering teams productive.

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20 Oct 2025 Cyber 👁 29 views

macOS Passive Domain Vulnerability Scanner: Full Guide

Below is a fairly comprehensive passive penetration testing script with vulnerability scanning, API testing, and detailed reporting. Features Installation Required Dependencies Optional Dependencies Usage Basic Syntax Options Examples: Network Configuration Default Interface: en0 (bypasses Zscaler) To change the interface, edit line 24: The script automatically falls back to default routing if the interface is unavailable. Debug Mode […]

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10 Oct 2023 Macbooks 👁 28 views

Mac Screenshot Format: Change PNG to JPEG, GIF or PDF

There are a few things that I tweak when I get a new Macbook, one of which is the screenshot format (mainly because it doesnt natively render in Whatsapp). So I thought I would share the code snippet that you can run in Terminal to alter the default image type of your screenshots: For JPEG […]

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21 Nov 2022 Open Source 👁 25 views

Auto-Renew Let’s Encrypt Certs on Linux with Cron

If you want to automatically renew your certs then the easiest way is to setup a cron just to call letsencrypt periodically. Below is an example cron job: First create the bash script to renew the certificate Now enter the script in the following format into nano: Now edit the crontab to run the renew […]

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