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Category Archive: Technology

Solutions to Saturday Mac riddles 337

I hope that you enjoyed Saturday’s Mac Riddles, episode 337. Here are my solutions to them. 1: Passing […]

December 8, 2025 General, Macs, Technology

Who decides to quarantine files?

By default, quarantine xattrs aren’t attached to new files created by an app. That behaviour is controlled by a setting in their Info.plist, and can be overridden in an Exceptions property list.

December 8, 2025 Macs, Technology

Last Week on My Mac: Making better use of security extended attributes

In a typical ~/Documents folder, 14% of all files have a provenance xattr attached to them, that could enable the app that last modified them to be identified. Could we make use of that?

December 7, 2025 Macs, Technology

Saturday Mac riddles 337

Here are this weekend’s Mac riddles to entertain you through family time, shopping and recreation. 1: Passing time […]

December 6, 2025 General, Macs, Technology

Explainer: Numbers

Integers of different sizes and endianness, floating point numbers with a radix of 2 that can result in rounding and cancellation errors and NaNs, and bfloat16 for AI.

December 6, 2025 Macs, Technology

Quarantine, MACL and provenance: what are they up to?

Why do so many files now have quarantine and other extended attributes, although they’re not apps, and may never have left that Mac?

December 5, 2025 Macs, Technology

The Anatomy of a macOS App

How Mac applications evolved from a multitude of resources to a bundle formed from a standard layout of directories, and how they have come to be largely self-contained in macOS 26.

December 4, 2025 Macs, Technology

Manage Login and Background items

How to control Login and Background items in System Settings, how to identify those you might not recognise, and how to use sfltool for advanced diagnostics and reset.

December 3, 2025 Macs, Technology

How to restart Spotlight, and why you might want to

Instead of logging out and back in, it’s possible to relaunch Spotlight from the Finder, as demonstrated here with the aid of the log. And it might be useful too.

December 2, 2025 Macs, Technology

Solutions to Saturday Mac riddles 336

I hope that you enjoyed Saturday’s Mac Riddles, episode 336. Here are my solutions to them. 1: Interchange […]

December 1, 2025 General, Macs, Technology

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