An introduction to the Unified log used on Macs and Apple’s devices. Its goals, how logs are stored and maintained, their content, privacy protection, and tools available to access them.
Console
This compares short time intervals obtained from log entry timestamps obtained from the log show command via Ulbow, those from LogUI using OSLog, and Mach Absolute Time.
Although there are important differences between Intel and Apple silicon Macs, both can resolve time to nanoseconds. So can this new version of LogUI.
Actions are moved to its toolbar to improve use. Selected messages can now be extracted into a window for editing (all Macs) and summary using Writing Tools (Apple silicon).
Search your log extract instantly to show only entries containing the chosen text in their message, process name, sender name, or subsystem.
How to construct and use filter predicates to refine the log entries shown in LogUI or most other log browsers, and in the log command tool.
Adds support for using your own filter predicates so you only see the log entries you want. Either in a one-off editor, or to its popup menu.
This new build checks that it can get log extracts, and has a wider range of filters you can use to select which entries it fetches and displays.
Get started browsing your Mac’s log using this lightweight and friendly utility. A walkthrough looking at what happened when I launched an app.
Introduced with Mac OS X, logs became a good way to diagnose a Mac’s problems, using Console. Then in 2016 it all changed, and not for the benefit of administrators or users.
The Eclectic Light Company 