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Category Archive: xattr

Documentation of extended attributes (xattrs) in macOS.

xattred 0.6a2 sees hidden files and folders, and more

Tweaked to see and open any file or folder, even inside bundles, and to fix a display glitch with binary property lists.

January 3, 2018 Macs, Technology, xattr

The ‘app’ you can’t trash: how SIP is broken in High Sierra

When you can’t remove an app which you installed just a few minutes ago, you know there’s something wrong. Here’s the solution, and why this is bad security.

January 2, 2018 Macs, Technology, xattr

You can now really edit extended attributes with xattred

Now supports cut, copy and paste of any xattr between files or folders. Also adds quarantine flags, and reveals full content of most xattrs.

January 2, 2018 Macs, Technology, xattr

xattr: lock, a log file lock

Found in some supplementary log files in Sierra only, and contain a UUID which may refer to main log files.

December 30, 2017 xattr

xattr: com.apple.uuiddb.boot-uuid, log metadata

Found in supplementary log files in Sierra and High Sierra only. May contain a UUID reference to main log files.

December 30, 2017 xattr

xattr: com.apple.logd.metadata, log metadata

Attached to log tracev3 files in High Sierra only. Contents and function not known.

December 29, 2017 xattr

xattr: com.apple.metadata:_kTimeMachineOldestSnapshot, old backup details

Found in Sierra, but seems to have fallen into disuse, and not found in High Sierra.

December 29, 2017 xattr

xattr: com.apple.metadata:_kTimeMachineNewestSnapshot, old backup details

Found in Sierra, but seems to have fallen into disuse, and not found in High Sierra.

December 28, 2017 xattr

Inside Finder Tags

The Finder manages its tags, so changing the label of any tag is immediately reflected in all items using that tag. But what are null tags, and why are they so common?

December 27, 2017 Macs, Technology, xattr

xattr: com.apple.metadata:_kMDItemUserTags, Finder tags

Details of where and how files and folders store their Finder Tag information. One of the few xattrs intended for the user.

December 27, 2017 Macs, xattr

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