Troubleshooting complex issues on a Mac can be challenging as is, and if you’re ever confronted with some complex situations you may find the command line to lend a major hand. In this case, advanced users can boot a Mac into safe mode through the usage of the nvram utility, a tool which allows users to directly manipulate firmware variables. We’ll use nvram to enable safe booting entirely through the command line, preventing a user from needing to use the standard Mac method to boot into safe mode by holding down a Shift key upon system start of OS X, this opens the door for remotely enabling safe mode and improved remote troubleshooting, and for a variety of scripting applications.
The networksetup utility offers a command line interface to configuring the variety of Mac networking features available in OS X. We’ve discussed networksetup and accompanying features many times here for more advanced purposes, but one of the simpler uses of networksetup is that it can list out every piece of networking hardware attached to a Mac, it’s accompanying device interface, and it’s associated address. This works to list both internal networking components and external connected networking devices as well, so if you’re using an external NIC card, you should find it here.
Have a favorite song that you want to use to seed a new music station? Maybe you’re looking to find some new tunes to hear based on a particular song or artist? iTunes Radio makes this process simple, and you can instantly create a new iTunes Radio station from any playing song or artist, whether that song is in your music library or playing from an existing iTunes Radio station. The latter situation is fairly well known by Radio users, but creating a new station from songs that already exist in an iTunes playlist is less well known. This works with any iTunes client that supports the Radio feature, whether it’s the desktop iTunes app or the Music app in iOS.
Red Eye happens sometimes in photography, often if you’re shooting a subject while using the camera flash, or when a bright light is shining in their eyes. The appearance is striking and usually undesirable, with the subjects eyes literally glowing red. You may run into the red eye effect when taking pictures with any camera, but the iPhone, iPod touch, and iPad all have a fantastic trick up their sleeve that lets you quickly remove red eye from just about any picture.
The iOS Dock sits at the bottom of our iPhone, ipod touch, and iPad home screen, intended to hold the most commonly used apps for quicker launching. While it’s well known that you can customize the apps that are contained within the Dock, what’s lesser known is that you can actually reduce the number of apps visible from the 4 default, down to 3, 2, 1, and, if you really want to, 0 apps.
What if the Edvard Munch expressionist classic The Scream was really a reaction to a broken iPhone screen? What if A Sunday Afternoon on the Island of La Grande Jatte was modernized for the 21st century, what would that Sunday afternoon look like now? What if The Card Players were actually just two guys staring at their iPhone screens? And what if The Last Supper by Da Vinci was filled with the apostles fiddling around on their Apple gear? If all of that sounds ludicrous, we’re in agreement, but that’s exactly what these amusingly updated (some may say ruined) classics show us.
Typically Mac users will retrieve the screen resolution of connected displays through the Displays system preference panel in OS X. There’s certainly nothing wrong with that approach, it’s easy and quick, but because it uses the graphical interface of OS X it’s not necessary helpful for scripting purposes or remote management through Remote Login and SSH connections. In these situations, and plenty of others, you may wish to retrieve the current screen resolutions of displays from the command line in Mac OS X.
Installing apps to iOS is easily done through the App Store, but uninstalling apps from the iPhone, iPad, or iPod touch is probably even easier. Yes, many users will know how to do this, but it always surprises me how many people don’t know how to remove an app from their iOS device. Fortunately, Apple has made app removal remarkably simple on the iOS platform, and it’s no exaggeration to say that you can completely uninstall an app in just a few seconds flat.
A purported iPhone 6 with what looks to be a 4.7″ display has been assembled from leaked parts, and the device even turns itself on, but is seemingly stuck on the familiar “Connect to iTunes” recovery mode screen. Two separate videos of the iPhone are embedded below for viewing (and this time it’s not a video of a hot dog).