jroddev

Linux

YubiKey Bio on Fedora KDE

Setup fingerprint unlock for sudo and session unlock using a YubiKey Bio - Fido Edition for uBlue KDE Aurora

Linux

Simple VPN Split Tunnel on Linux

The IP-based split-tunneling that I explore here allows control over which IP addresses go through a default VPN tunnel and which instead go through your regular network interface (or another VPN).

Linux

Kubernetes Rolling Volume Backups

Use rsync hard-links to perform rolling backups of Kubernetes Volumes

Quick Tricks

Bash script to check SSL certificate expiry

This script iterates through my list of targets, checks the certificate expiry and prints the details.

Android

Reading and Writing files in Android 10+ Scoped Storage

Use Kotlin and Jetpack Compose to read and write files with the new scoped storage system in Android 10 and above.

Android

Making HTTP requests with Coroutines in Android

Coroutines are a powerful feature in Kotlin to write asynchronous code that can look like synchronous code. Volley is a popular Android library for making HTTP requests. By combining the two we can drastically simplify code that depends on multiple API calls

Android

Basic XML Parsing in Android

A small code snippet showing how to read values from an xml file in Android

Rust

Rust AST

Examples of TokenStreams and DerivedInput objects in Rust using Syn crate.

Quick Tricks

Decode Webpages using FireFox Plugin

Create a FireFox extension that allows post processing a webpage. Use a mapping file to decode hidden values.

Rust

Writing Tests in Bevy

Here I build the classic phone game Snake,with tests using the Bevy Game Engine.

Testing

Unit Test Scope (Domain)

By understanding what a function is and is not responsible for we reduce duplication and make our code easier to understand and more resilient to change.

Testing

Smaller, Clearer Tests

Generating test values can better express intent of input values. The examples are written using Typescript, but the same technique can be used elsewhere.