Tootfinder

from my link log —
eslogger: trace filesystem events using the Mac OS X endpoint security framework.
https://notes.billmill.org/computer_usage/mac_os/debugging_os_x.html
saved 2025-07-10

Mostly losing share to Mac OS, there's also a small but noticeable rise in #linux . Microsoft has declining market share by ~25% since 2009 in Germany...
#endof10

Subspace {L}usternik-{S}chnirelmann category of quasi-projective quaternionic spaces
Enrique Mac\'ias-Virg\'os, Daniel Tanr\'e
https://arxiv.org/abs/2509.20210 https…

Subspace {L}usternik-{S}chnirelmann category of quasi-projective quaternionic spaces
Let $Q_n$ be the quasi-projective subspace of the symplectic group $\mathrm{Sp}(n)$. In this short note, we prove that the subspace Lusternik-Schnirelmann category of $Q_n$ in $\mathrm{Sp}(n)$ is 2. For that, we use a quaternionic logarithm, as Singhof did in the complex case for the determination of the Lusternik-Schnirelmann category of the unitary group. Our result generalizes the known case $n=2$ (by L. Fernández-Suárez, A. Gómez-Tato and D. Tanré) and has to be compared to the equali…

I ran Snow Leopard on my main personal server longer than any other OS version. I only moved to a new version when the last Mac I had that could run SL died.
I like a lot of things that exist in more modern macOS which were not present in SL. I deeply miss its stability.
#IWeep6Colors

My late father had a lot of old (c. 2000?) Macintosh books. Are these of interest to anyone?
I can't guarantee I'd be able to dig up any CD-ROMs that came with them, but it's possible. And you'll need to be patient because they're located 100 miles from me.

Another great alternative to Windows 10 is Mac OS 9.2.2.
Even comes with the latest Bungie games!

Spent a few hours cleaning out the fridge on my M1 Mac Mini today. It’s now in an ok state and can resume its local server role. But man, there’s zero joy in using macOS anymore. Just paper cut after paper cut. Or should I say joy in using OS X? I guess that’s when it actually was nice to use. Even with the limitations, iOS feels less claustrophobic – perhaps because it never had the freedom to begin with, so you don’t run into all the restrictions in the same way. I got the Mac because it w…

The Mail client in macOS 26 still identifies as "Mac OS X Mail 16.0" in headers.

There was a time when, if you were lucky enough to get a piece of software stable and working well, it continued to be stable and work well.
Now we have relentless updates, whose problems are exemplified by an overnight update of my Mac to OS X 15.6 doing a factory reset of the settings of many of my programs.
Let's not even go into the behavioral changes that get pushed that invalidate all your muscle memory in order to boost some product manager's performance review.
I like stability, but it's just another casualty of this endless churn.

still works .... my #iPod

Apple acquired Curvus Pro X roughly 21 years ago. 👴🏻 I used Grapher recently after not using it for, well, about 2 decades. 😆
https://appleinsider.com/articles/04/09/15/apple_acquires_curvus_pro_x_to_power_new_mac_os_x_tiger_application

from my link log —
fs_usage: see filesystem activity on Mac OS X.
https://til.simonwillison.net/macos/fs-usage
saved 2025-07-10 htt…

Using fs_usage to see what files a process is using
Today I wanted to figure out where the vercel CLI tool on my Mac kept its authentication tokens.

Today, a new intern asked me if we use Windows or Mac OS.
- No.

Baues-Wirsching Cohomology and Svarc Genus in Small Categories
Isaac Carcac\'ia-Campos, Enrique Mac\'ias-Virg\'os, David Mosquera-Lois
https://arxiv.org/abs/2508.00727

Baues-Wirsching Cohomology and Svarc Genus in Small Categories
We prove that for a bifibration P between small categories, the lenght of the cup product in the kernel of the induced morphism in the Baues-Wirsching cohomology with coefficients in any natural system is a lower bound for the homotopic sectional category (also called Svarc genus). Our results extend classical Svarc type inequalties to the categorical setting and introduce a computationally efficient method via a reduced cochain complex for Baues-Wirching cohomology.

We have lost our way. https://mastodon.social/@jwz/114983588990828450

from my link log —
Activity Monitor anatomy: memory accounting on Mac OS.
https://www.bazhenov.me/posts/activity-monitor-anatomy/
saved 2025-07-30