OS X 10.11 El Capitan was released on September 30, 2015. Similar to Mac OS X 10.6 Snow Leopard, Apple described this release as emphasizing 'refinements to the Mac experience' and 'improvements to system performance'. 2015 Apple MacBook Pro Laptops for Christmas. Before the Christmas holidays begin, consider getting your hands on a 2015 Apple MacBook Pro. The MacBook series includes 12-inch, 13-inch, and 15-inch models with a number of variations within each size. They support different versions of the Mac operating system. In this pretty long video I will show you how to install MAc OS xX on a tablet and this video is not really for beginners.so if you don't know what MyHACK is and if you never hearth of Vietnam. Macbook time machine external hard drive.
How to get updates for macOS Mojave or later
If you've upgraded to macOS Mojave or later, follow these steps to keep it up to date:
- Choose System Preferences from the Apple menu , then click Software Update to check for updates.
- If any updates are available, click the Update Now button to install them. Or click 'More info' to see details about each update and select specific updates to install.
- When Software Update says that your Mac is up to date, the installed version of macOS and all of its apps are also up to date. That includes Safari, iTunes, Books, Messages, Mail, Calendar, Photos, and FaceTime.
To find updates for iMovie, Garageband, Pages, Numbers, Keynote, and other apps that were downloaded separately from the App Store, open the App Store on your Mac, then click the Updates tab.
To automatically install macOS updates in the future, including apps that were downloaded separately from the App Store, select 'Automatically keep my Mac up to date.' Your Mac will notify you when updates require it to restart, so you can always choose to install those later.
How to get updates for earlier macOS versions
If you're using an earlier macOS, such as macOS High Sierra, Sierra, El Capitan, or earlier,* follow these steps to keep it up to date:
- Open the App Store app on your Mac.
- Click Updates in the App Store toolbar.
- Use the Update buttons to download and install any updates listed.
- When the App Store shows no more updates, the installed version of macOS and all of its apps are up to date. That includes Safari, iTunes, iBooks, Messages, Mail, Calendar, Photos, and FaceTime. Later versions may be available by upgrading your macOS.
To automatically download updates in the future, choose Apple menu > System Preferences, click App Store, then select 'Download newly available updates in the background.' Your Mac will notify you when updates are ready to install.
* If you're using OS X Lion or Snow Leopard, get OS X updates by choosing Apple menu > Software Update.
How to get updates for iOS
Learn how to update your iPhone, iPad, or iPod touch to the latest version of iOS.
Learn more
- Learn how to upgrade to the latest version of macOS.
- Find out which macOS your Mac is using.
- You can redownload apps that you previously downloaded from the App Store.
- Your Mac doesn't automatically download large updates when it's using a Personal Hotspot.
Code dive You can bypass Apple's space-age security, and gain administrator-level privileges on an OS X Yosemite Mac, using code that fits in a tweet.
Yosemite, aka version 10.10, is the latest stable release of the Mac operating system, so a lot of people are affected by this vulnerability. The security bug can be exploited by a logged-in attacker, or malware on the computer, to gain total unauthorized control of the Mac. The vulnerability is documented here by iOS and OS X guru Stefan Esser.
It's all possible thanks to an environment variable called DYLD_PRINT_TO_FILE that was added in Yosemite. It specifies where in the file system a component of the operating system called the dynamic linker can log error messages.
Apple Os X 2015 Review
If the environment variable is abused with a privileged program, an attacker can modify arbitrary files owned by the powerful user account root – files like the one that lists user accounts that are allowed administrator privileges.
Here's the titchy root-level privilege-escalation exploit, devised yesterday by Redditor Numinit:
echo 'echo '$(whoami) ALL=(ALL) NOPASSWD:ALL' >&3' | DYLD_PRINT_TO_FILE=/etc/sudoers newgrp; sudo -s # via reddit: numinit (shorter)
— Stefan Esser (@i0n1c) July 22, 2015These shell commands run whoami to output your username (eg: vulture) and then tacks 'ALL=(ALL) NOPASSWD:ALL' on the end to form a line like:
It then outputs that line to the file specified by DYLD_PRINT_TO_FILE, which in this case is the list of users who can gain root-level privileges: /etc/sudoers. That line tells OS X that your user account is allowed to gain root privileges without a password.
A privileged program – the root-owned set-uid executable newgrp – is run to provide the root-level access to the sudoers file. Finally, sudo -s is executed to open an interactive command-line shell, which will have root-level privileges for your user account thanks to the update to the sudoers file. From there you can do anything you like; modify documents, install malware, create new users, and so on.
This flaw is present in the latest version of Yosemite, OS X 10.10.4, and the beta, version 10.10.5. If you upgrade to the El Capitan beta (OS X 10.11), you'll be free from the vulnerability as Apple has already fixed it in that preview beta. Once again, if you keep up with Cupertino and install (or buy) the very latest stuff, you'll be rewarded.
Apple keyboard f keys. Failing that, you can install Esser's SUIDGuard to protect your Mac. 'Apple ships fixes for security in beta versions of future products, but does not fix current versions,' Esser noted. ®
Apple Os X 2015 Specs
