The strangely named “here documents” let you use input/out redirection inside Bash scripts on Linux. They’re a great way to automate commands you need to run on a remote computer. Here Documents Many commands in Linux have two or three letter names. This is partly what gives rise to the notion that Linux is hard to learn and full of arcane commands. But one of the weirdest names in Linux isn’t one of the cryptically short ones. “Here documents” aren’t documents, and it isn’t really clear what the “here” refers to, either. They are a relatively obscure construct, but they are useful. Of course, this is Linux, so there’s more than one way to skin a cat. Some of the functionality provided by here documents can be reproduced in other ways. Those alternate methods are usually more complicated. In programming and scripting, “more complicated” also means “more prone to bugs,” and that your code is harder to maintain. Where here documents really excel is in the automation of … [Read more...] about How to Use “Here Documents” in Bash on Linux
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AirTags let you track nearby or missing items with Apple’s Find My network, which is powered by hundreds of millions of iPhones around the world . So how will Apple prevent someone from slipping an AirTag into your bag and tracking your movements? AirTags and the Potential for Abuse RELATED The 5 Best Bluetooth Trackers AirTags are small, keyring-sized item trackers that are designed to locate anything from a handbag to a bicycle wherever it is in the world. Apple’s solution works almost identically to competitors like Tile, using low-energy Bluetooth signatures to effectively crowdsource geolocation for your missing gadgets. This allows you to attach a tag to an item of value in the hope of finding it if it ever goes missing. The tag emits a Bluetooth signature that passing iPhones can detect and relay without exposing any information about either party. You can then use Apple’s Find My app on an iPhone, iPad, or Mac (or the web version at … [Read more...] about How Apple’s AirTags Prevent Stalkers from Tracking You
Do you often misplace your iPhone? If you have an Apple Watch, it’s easy to find your phone using the ping feature, saving you the embarrassment or hassle of asking a friend or family member to call your phone to help you find it. Your Apple Watch must be connected to your iPhone via either Bluetooth or the same Wi-Fi network to be able to use the ping feature on your watch to find your phone. To ping your iPhone, make sure the clock face is showing on your watch. If it’s not, press the digital crown until the clock face displays. Swipe up from the bottom of the watch screen to open the Glances. Swipe right until you see the Settings glance, which is the leftmost glance screen. Tap the pinging phone button. Your iPhone will emit a short, pinging sound to help you find it, even if it’s in silent mode. A message saying “Pinging iPhone” displays briefly on your watch’s screen as well. If your iPhone is not in range of your watch, you can use iCloud.com to find your … [Read more...] about How to Find Your iPhone Using Your Apple Watch or iCloud
When you’re adding a filter to a photo on Instagram, it can be hard to know whether the filter is actually an improvement. If you go to far, you can ruin an otherwise good shot. There’s a great shortcut in Instagram to help you with this, though. With the image open and some edits applied, tap and hold the image preview. As long as you hold the image, you’ll see the un-edited original. When you let go, it’ll show you the version with your edits and filtered applied. No need to flip between the “Normal” and “Clarendon” filters along the bottom. Just tap and hold to see how your changes compare. READ NEXT › How to Switch to an Instagram Business Account › What Does “Adopting Apps” Mean on a Mac? › How to Set up Two-Factor Authentication in 1Password › How Apple’s AirTags Prevent Stalkers from Tracking You › How to Set Up and Pair an Apple AirTag to iPhone or iPad … [Read more...] about How to Toggle Between Filtered and Unfiltered Instagram Photos As You Edit
If you’ve opened your phone today, there’s a good chance that you’ve already seen a post with the acronym BTW in it. Here’s what it means and how to use it. “By the Way” BTW stands for “by the way.” It’s used to insert a new idea into a conversation or to bring something up (like a reminder). It can also be used to change the subject of a discussion quickly. Even compared to other slang terms, BTW is one of the most popular acronyms on the internet. Alongside being used in millions of personal messages and social media posts every day, it can also be seen in website articles, advertisements, and even professional emails. It’s even spoken out loud in real life and has its own special pronunciation. BTW can be written in both uppercase and lowercase form. However, the lowercase “btw” is much more common, especially with the rise of mobile messaging. In the early 2000s, it was common to see it written as “B.T.W.” with periods in between the letters, but that version is no … [Read more...] about What Does “BTW” Mean, and How Do You Use It?