CLI for the Moon After trudging through the grossness of trying to add to $PS1 from a script, I got to thinking it would be fun to have the phase of the moon on my shell prompt.
PS1: The shell prompt variable and the tricky parts about setting it I wanted to add some information to the shell prompt from a script recently and learned some things about bash, PS1 and shell variables along the way. What is a shell prompt and
Telnet An exchange I had a few months ago went something like this: Me: Weird, my requests aren't getting through, but I can ping the server just fine. Coworker: I can't telnet to the
Reflections on TIL posts TL;DR Here are things I found helpful the past few days: Set goals, set time limits, enforce with timers Outline, outline, outline Be genuine The Experiment Last Wednesday, I decided to try
linux networking Why does TCP even need a 3-way handshake? The 3-way handshake. It's inevitable in any TCP discussion that you mention the TCP connection establishment three-way handshake. After writing about QUIC and how it aims to have 0-RTT connection establishment cost, I started wondering why TCP needed that 1-RTT 3-way handshake in the first place.
linux networking TIL: QUIC is like TLS over UDP QUIC (Quick UDP Internet Connections) is a new(ish) protocol for developing applications on the internet. It aims to provide TLS-like encryption without the overhead of TCP.
linux networking TIL: The difference between netstat and ss Motivation In this post, I'm going to go over two tools for inspecting the socket states (netstat and ss), and why to choose one over the other (spoiler: you can really choose either)
linux networking TIL: There are 16 T1 Internet Service Providers I've been collecting information for a "Practical Guide to Linux Networking" by reading material I can find. Two things I've been reading recently are: A Practical Guide to (Correctly) Troubleshooting with
TIL New Format: Today I Learned I am going to try a new format where I write about something I learned. My goals with this format are: Increase the amount of writing I do Increase the frequency of writing
rust Dumb dig clone in Rust Why write a DNS client When I started digging in to DNS, I thought it would be interesting to try implementing a very simple DNS client similar to dig, but using Rust. My
linux networking Starting to figure out SSL Introduction I've been slowly working towards a personal finance app, but before I can actually put it on the open web, I want to be reasonably confident that I am not opening myself
linux networking Meandering History of DNS Authority As a follow up to my DNS post, I started trying to answer "Who's in charge of all this?". Basically, I wanted to know what keeps me from claiming a different
Wifi Wifi Woes resolved with Ubiquiti Fast Wifi is possible! I have declared my Ubiquiti experiment a success! I am consistently measuring internet speeds over 100 MB/s with the lowest I've seen around 40 MB/s. This is
Wifi Debugging Slow Wifi Introduction I ran into the ever common problem of slow WiFi recently. In this post I want to detail the experiments I ran and what I gleaned from the results. Setting the Stage
linux networking DNS End to End Domain Name System: End to End We all interact with the Domain Name System (DNS) every day. Every time we load a web page, or click a link, our software relies on DNS
Linux What does mount do? Background As I mentioned in my [post about containers][container-post], I want to write a container tool in rust to learn more about rust and containers. I started doing that with my friend
Running a Single Page App in Docker - Part 2 Introduction In my [last post][last-post], I left off with 2 docker containers: one running the Go server back-end and one running the Nginx front-end serving the JavaScript for the site. In this
Running a Single Page App in Docker - Part 1 Setting the Stage Recently, I've [posted][container-post] about what the high level of what a container does, how [sessions][sessions-post], how a [JWT][jwt-post] works, and how [Google Sign-in works][google-post]. I've been
JWT's From Third Party Authentication Providers JWT’s in Google Sign-in Last time [I wrote about Google Sign-In][last-post], I discussed the details of why you would want google-sign-in vs. using OAuth to grant you access to a person’
Understanding Authentication and Sessions Motivation In [my post about using Google Sign-In][signin-post], I walked through some pieces of authenticating using Google as an identity provider. In the example I used [Flask-Login][flask-login] to manage sessions. Since
Containers - How do they work? Motivation I hear the word "container" in the software context a lot but I do not really know it means. To quote Tim Urban ([again][first-post]), I get the "ugh
Google Sign In and Google Sheets: Step by Step in Python Motivation As part of my CashCoach project, I want to share and update spending reports with a user using Google Sheets. It turns out there a lot of different options for interacting with
Morse Code to Emoji: A Brief history of character encodings Introduction I found myself wondering what Unicode symbols looked like at the bit level. In the ASCII world, a single byte is a single character, so the encoding is relatively straightforward. However, in
Buckle Typings - Part 2: Walking the AST In my [last post][1], I layed out the plan to make a converter from TypeScript .d.ts type declarations to OCaml external modules useable in BuckleScript. When I left off, I had
Buckle Typings - Creating modules useable in BuckleScript from TypeScript typings In my [last post][1], I put together a simple (and incomplete) wrapper around PixiJS in order to use it in BuckleScript. This is a common task when using untyped code in a
