Friday, September 15, 2023

Using Bash to Sort IPs by Subnet Uniqueness

This is a helpful Bash script to parse IP addresses by the uniqueness of their subnets. This can be quite helpful in various scenarios.

Thursday, September 14, 2023

Binary, IPv4, and Subnets

The IPv4 protocol which we broadly (but not totally) use today rests on an addressing system that was designed in the 1970s and formally published in 1980.

Tuesday, September 05, 2023

The Etymology of 'Deadline'

The word 'deadline' has a popular etymology story around 19th century prison culture. The explanation of the meaning behind the word 'deadline' often goes something like this — as many etymologists and US dictionaries frequently cite it:

Tuesday, August 29, 2023

Life of a Windows Process

In a previous post, I covered a bit about how Windows Processes are initialized. But how does process creation work in Windows? Let's explore a bit further into Windows processes.

Thursday, August 24, 2023

Subshells in Linux (and Windows)

Or rather, subshells in Bash and Powershell. A subshell functions as a sort of isolated environment for executing commands, creating a subprocess or child process within the parent shell.

Wednesday, August 23, 2023

Portable Executable Format and Structured Exception Handling

The Portable Executable (PE) file format is the native file format for executable and binary files in the Microsoft Windows ecosystem.

Tuesday, August 22, 2023

Processes and Call Stacks

In Windows, our process information looks something like this.

Using Python To Access archive.today, July 2025

It seems like a lot of the previous software wrappers to interact with archive.today (and archive.is, archive.ph, etc) via the command-line ...