Jack Kingsman's actual brain

Jack's Brain

Hi! I’m Jack Kingsman, an SRE @ Atlassian in Seattle. In my free time stay busy as a volunteer EMT, Divemaster, and amateur radio operator.

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May 29, 2020

My pet hisser Julian on the prowl, with some dubbed Jurassic Park for atmosphere.

I recently stumbled upon a site I wanted to save a video from, so I went to open devtools and check the Network tab for the video source when suddenly the page redirected me to an error page! After a couple tries it was clear this was detecting devtools being opened and directing me away from the page — how curious (and annoying).

A quick google indicated that there are some hacks to detect sudden screen width changes as indicator of the devtools pane sliding open, but an undocked pane gave the same result. After some hunting via the initiator, this was the code responsible:

Dec 18, 2019

Zork is one of the very first interactive fiction games and was released in 1977 for the PDP-10. Interactive fiction is a gameplay style now (sadly) mostly lost to the sands of time where on-screen text describes your environment to you and you interact via basic text commands (e.g. go north, take sword, hit troll with sword).

Zork (or Zork I, to differentiate it from the subsequent releases), is a timeless classic with a rich and challenging story. Zork has been open sourced by its creator Infocom, so I set out to learn a bit about it and make some unique ways to interact with it.

If you’re like me (and, in this regard, if you’re not then you should be), you use Google Authenticator or a similar application to generate Multiple Factor Authentication tokens — six digit codes that add an extra step of identity verification to sites you log into. These codes rotate every thirty seconds and must match the one the server is expecting (kinda like nuclear launch codes, but to log into Twitter/Google/banking/etc.).

Jan 10, 2019

Well, after four and a half wonderful years with my magnet, I bid it farewell.

After a particularly firm snag and a subsequent major loss of sensitivity, I was concerned the magnet was fractured or the coating had failed so I did an emergency removal which went very smoothly and I’m now all healed up.

I’ll miss it dearly; after that long, it became an instinct — just the other day I was doing PC maintenance and confidently reached for a screw with my finger that disappointingly didn’t jump onto it for safekeeping… This will take some getting used to :(

Sep 02, 2018

I’ve been diving quite a bit (just finished my 26th dive today)!

Here are some videos from last weekend, when two buddies and I camped in Monterey and dove (literally) sunup to sundown, and from this weekend when I dove a marine preserve called Point Lobos with another friend of mine.

A couple weekends ago, I install PiHole, a software package that provides DNS blackholing for your local network, and I was shocked.

Some background: DNS (domain name server) is essentially the internet’s phone book. When you type google.com,  your computer first asks a DNS server (run by your internet service provider, Google, Cloudflare, or any other of hundreds of DNS providers) for the website’s IP address. The IP address is how the infrastructure of the web actually knows how to route your request — if google.com is like saying “Dave Smith’s House”, the IP address 216.58.192.14 that corresponds to it is like knowing “123 Main Street, Greenville, South Carolina.

Jul 22, 2018

…I’m becoming one of those blogs with 6 month intervals between posts.


Life’s been great lately! I’m chugging along at work, taking on more responsibility for IT needs. Outside of work, I’ve jumped feet first into scuba diving! I’ve got my certification and am shooting for 20-25 dives under my belt before I hit Hawaii in September. I’m getting plugged in with some local clubs as well as wildlife teams that do volunteer fish/kelp/urchin/etc. survey dives for reports to the Dept. of Fish and Wildlife.

Jan 21, 2018

Hai world.

It’s been a while since I posted; life is changing — updates lie within. I’m really liking my full-time gig doing software dev in SF.

My parents are moving to South Carolina and I’ve just signed the lease on a cute little apartment in Redwood City.

I’m currently struggling to sort through (and dispose of most of) my accumulated junk from the last 22 years of life, including much that was acquired before I realized I have a great distaste for physical objects I don’t use regularly (read: I have a monumental amount of crap to throw away).

Nov 24, 2017

My latest hobby/focus/obsession has been mead, and man, I’ve been having so much fun sinking my teeth into the art and science — already made 3 gallons and just started a 5.5 gallon batch.

To track what’s at what step, what my recipes are, and to do some helpful conversions, I made Mead.Kiwi, a site to track all of my work. On each bottle is a QR code that will take you to the recipe page for your bottle, contain records of mixing/pitching/aging, data from intermediate density readings, etc. I’m pretty happy with it, and seeing as how I haven’t been doing much coding lately, I thought I’d at least put it here.

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