September 2002
Intermediate to advanced
1272 pages
31h 12m
English
Content preview from Cocoa® Programming
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Authentication and Security
To provide security and prevent accidental or malicious damage to the operating system, Mac OS X restricts the use of certain system files and applications. Individual users can restrict the uses of their own files; however, some applications might need to modify restricted files or run restricted applications. Examples of such applications include software installation programs, network administration programs, and many standard Unix command-line programs. An installer that needs to write files in the /Applications folder must overcome the restriction that prevents the /Applications folder from being modified.
The capability to overcome a security restriction is called a privilege. Applications normally have the ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.