I’ve been a Mac user since the Performa 638 CD I purchased in 1994, and I had no idea these shortcuts existed. While I wouldn’t recommend them to every Mac user, if you’re comfortable with the potential issues of immediately shutting down your Mac, you’ll want to learn these post-haste.
You know the shutdown spinner on your iPhone, iPad or iPod touch? If you own latest-generation hardware, it probably drives you crazy every single time you see it. Why? Because it is a lone holdout of non-Retina UI on Apple’s otherwise beautifully high-res OS. Now, in iOS6, this has – finally – been fixed.