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So my little (by California standards) town of Novato, California, pop 51700, had four No Kings Rallies yesterday. I went to the downtown rally ...

macOS Sequoia’s Macintosh screen saver is one of the strongest hits of nostalgia Apple has ever produced. If for some reason you haven’t seen it, Mr. Macintosh has you covered:

When this showed up last year, a little birdie told me that it was dynamically generated based on the user’s preferences, which explained why I couldn’t find it as a movie anywhere in the filesystem.

I’ve used it as my screen saver since then — set to Dark Gray — but I never made it around to digging into what makes it tick.

When looking for macOS Tahoe’s wallpapers, I was reminded of this project. I went digging through the SSD on my MacBook Pro, and my journey through Finder has yielded great fruit.

The screen saver is actually an Extension, residing at /System / Library / ExtensionKit / Extensions / WallpaperMacintoshExtension.appex (spaces added for legibility).

Right-clicking to “Show Package Contents” unveils a treasure trove:

I’m not really a programmer, but I know enough to see how this works. There is code telling those images how to move and interact with each other through a set of .program files. If the user has Macintosh set as their wallpaper, the screen saver slides to a stop once they return to the Desktop.

Here you can see IconGarden.program, resaved as plain text. Here is its corresponding image:

Here we have System6ControlPanel.program as plain text, and its image:

Interestingly, a bunch of the .program files include the string “Macintosh 40th Anniversary,” which helps explain how this project came to be.

For preservation purposes, I figured I should export the Macintosh images at a larger resolution for easy sharing. You can snag a .zip of them here.

Forced by licensing issues, Apple replaced the rsync command-line tool in macOS with an alternative: openrsync. Here's what you should know about the change.


The rsync command-line tool has been around for decades. It provides users with the ability to copy files and folders to and from remote computers over the Internet and local networks.

Rsync works by comparing files during a request to copy, and only transmitting files that have changed. This reduces the size and time required to make network copies.


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In this roundtable, cybersecurity experts — including two former CISA executives — weigh in on alternate sources for threat intel, incident response, and other essential cybersecurity services.

In a world where personal mobility devices are getting sleeker and more compact, Cocoa Motors has unveiled the WALKCAR 2, a device that might just make you question the need for walking altogether. Imagine a laptop-sized gadget that lets you glide through the streets or mall with zero effort. It sounds like something straight out of a sci-fi movie, right?

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