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.
What Is Minification and How to Test If It Works
1. What is Minification Minification is the process of removing everything from source code that a browser does not need to execute it. This includes whitespace, line breaks, comments, and long variable names. The resulting file is functionally identical to the original but significantly smaller. A CSS file written for human readability might look like […]
Read more →K8GB: Cloud Native GSLB for Kubernetes Explained
Today I am a happy bunny!!!! Yury Tsarev (a very clever dude) did a presentation to one of the Kubernetes co-founders Tim Hockin. The demo was one of absa banks opensource projects called K8GB (a cloud native GSLB for K8s): https://www.k8gb.io/ Why do I like K8GB? Because it uses a single CRD that integrates to […]
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Corporate Humility: Why It’s a Leadership Survival Trait
Most organisations don’t fail because they lack intelligence, capital, or ambition. They fail because leadership becomes arrogant, distant, and insulated from reality. What Is Humility? Humility is the quality of having a modest view of one’s own importance. It is an accurate assessment of one’s strengths and limitations, combined with an openness to learning and […]
Read more →Monitor Top Disk Reads and Writes on macOS Script
The script below tracks disk usage of a macbook for 20 seconds and the shows the processes with the highest disk utilisations Example output:
Read more →iPhone to MacBook Photo Transfer Script: Complete Guide
Annoying Apple never quite got around to making it easy to offload images from your iPhone to your Macbook. So below is a complete guide to automatically download photos and videos from your iPhone to your MacBook, with options to filter by pattern and date, and organize into folders by creation date. Prerequisites Install the […]
Read more →macOS: Find Processes Using a Specific Remote Port
I find this script useful for debugging which processes are talking to which remote port. Example Usuage:
Read more →MTR on macOS: Fix Traceroute Issues with Zscaler VPN
If your on a zero trust network adapter like zscaler or netskope, you will see that traceroute doesn’t work as expected. The article below shows how to install mtr (my trace route) using brew: Next we need to change the owner of the MTR package and it’s permissions (otherwise you will need to run it […]
Read more →gping Over Zero Trust Networks on macOS: Interface Guide
Once you start using a zero trust network, the first causality is normally the Ping command. The gping (Graphical Ping) command line displays a color coded realtime graph of continuous pings to a specified host and it supports specifying alternate interfaces/gateways. First lets find which interface to use. The “arp -a” command is used to display […]
Read more →SCP Files to EC2: Mac & Linux Command Guide
I always forget the syntax of SCP and so this is a short article with a simple example of how to SCP a file from your laptop to your EC2 instance and how to copy it back from EC2 to your laptop: Copying from Laptop to EC2 scp -i identity_file.pem source_file.extention username@public_ipv4_dns:/remote_path scp: Secure copy protocol-i: Identity […]
Read more →How to Flush DNS Cache on MacBook: Terminal Command
I am not going to tell you why you would need to flush your DNS cache (you will know if you need to). So, to flush DNS on a mac simply fire up Terminal and run the following sudo command:
Read more →Import Excel Workbook Data Into a VB Array: How-To
The following code can be used to import the contents of an excel workbook into an array from within a Visual Basic application.
Read more →NMAP Vulnerability Scan Script With Formatted Report on macOS
If you want to quickly health check your website, then the following script is a simple NMAP script that scans your site for common issues and formats the results in a nice report style. Here’s a comprehensive guide on how to fix each type of directory permission issue that the above script might find (for […]
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