The Mac Observer

Skip navigational links

You're viewing an article in TMO's historic archive vault. Here, we've preserved the comments and how the site looked along with the article. Use this link to view the article on our current site:
Mac OS X Leopard Certified as 100% UNIX

Mac OS X Leopard Certified as 100% UNIX

by , 3:50 PM EDT, August 1st, 2007

The Open Group has certified Apple's Mac OS X version 10.5 as UNIX. Prior to Leopard, Apple had to describe Mac OS X as UNIX-like or UNIX-based.

It was a minor technical caveat by Apple that was easy to overlook.

In the early days of Mac OS X, 100 percent POSIX compliance was not considered a priority for a primarily consumer-based OS. The variations from standard POSIX APIs was very small, and didn't have any real effect on Mac OS X or its functionality. There were many more important tasks to attend to.

However, over time, it became increasingly important for Apple to have full UNIX certification for Mac OS X, and Leopard will have that distinction.

In some cases, that lack of certification could have had an influence on some government contracts. With some UNIX professionals, it occasionally brought some unfounded suspicion about Mac OS X being somehow inferior, somehow not real UNIX.

However, that will all be behind Apple when Leopard ships, and Apple will be able to claim that Leopard is UNIX. It seems like a small issue in general, but it's been a nagging issue in some very technical circles, best put into the history books at last.

  

Recent TMO Headlines - Updated September 27th

Tue, 2:12 PM
TMO Daily Observations 2016-09-27: HealthKit for Diagnosis, Roku vs Apple TV
Tue, 1:49 PM
Pay What You Want for The Award-Winning Mac Bundle
Tue, 12:50 PM
iOS 10: Print to PDF With and Without 3D Touch
Tue, 11:57 AM
How to Set Up Universal Clipboard for Your Mac and iOS Devices
Tue, 9:38 AM
macOS Sierra: Using Tapback in Messages
Mon, 6:38 PM
watchOS 3: Mickey and Minnie Mouse Can Now Speak the Time
Mon, 5:51 PM
iOS 10: How to Use Maps Extensions
Mon, 5:07 PM
TMO Background Mode: Interview with Founder & President of Bombich Software, Mike Bombich
Mon, 3:13 PM
iOS 10 Maps 'Overview' Buttons Moved to the Swipe-Up Drawer
Mon, 2:35 PM
A-Shirt Makes Apple-Inspired Shirts for Apple Fans
Mon, 2:32 PM
TMO Daily Observations 2016-09-26: macOS Sierra PDF Issues, Apple ID Two-Factor Authentication
Mon, 2:25 PM
Apple's iPhone 7 Invitation Refused by Bloggers
  • __________
  • Buy Stuff, Support TMO!
  • Podcast: Mac Geek Gab
  • Podcast: Apple Weekly Report
  • TMO on Twitter!