The Unix underpinnings, frameworks, and platform security model behind Apple's desktop OS.
A practical set of real, working defaults commands to unlock hidden macOS settings, plus how to find and safely revert any customization yourself.
A complete walkthrough enabling FileVault, understanding your recovery key options, and what to do if you're locked out - before you need it, not after.
Auditing and controlling what actually starts at login - covering both the modern Login Items UI and the launchd agents it doesn't show.
Moving your entire setup - apps, files, accounts, and settings - to a new Mac, plus what to check afterward when something doesn't carry over.
A complete Time Machine setup covering drive selection, encryption, and exclusions - plus how to actually verify your backups will restore.
How launchd unified boot-time initialization, service supervision, and scheduled tasks into a single declarative system on macOS.
A practical guide to writing, installing, and debugging your own scheduled or persistent launchd jobs, from a first plist through production-grade patterns.
At WWDC on June 22, 2020, Tim Cook announced a two-year plan to move every Mac from Intel processors to Apple's own chips.
Released March 24, 2001 at $129, Mac OS X 10.0 brought Apple's NeXT-derived, Unix-based operating system to consumers for the first time.
Released September 30, 2015, OS X 10.11 shipped with SIP enabled by default - restricting even the root user from modifying protected system files.