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
Updates are a frequent topic when it comes to the Android operating system. There are actually different types of Android updates, one of which is a “Security Update.” What’s different about these updates, and why are they so important? In the Android world, there are basically three types of updates: big annual firmware updates that bump up the version number (11 to 12), smaller monthly security updates, and “ Google Play System Updates ,” which are another type of security update. RELATED: What Are Google Play System Updates on Android, and Are They Important? Table of Contents What Is an Android Security Update? Why Are Android Security Updates Important? How to Check for Android Security Updates Why Is My Android Phone behind on Security Updates? What Is an Android Security Update? An Android Security Update is an update that is primarily geared toward improving security and fixing bugs. These updates don’t typically include … [Read more...] about What Are Android Security Updates, and Why Are They Important?
Your smart TV is probably tracking what you watch. “Automated content recognition” (ACR) technology detects what you’re watching, uploading snippets of content to a reference library so marketers can keep track of your viewing habits. Your Smart TV Is Reporting What You Watch Automated content recognition isn’t the only tracking issue on TVs, but it’s one of the most startling. Here’s what the marketing industry doesn’t want you to know: Many TVs have “ automated content recognition ” technology that detects what you’re watching—even if you’re watching OTA TV or an old VHS tape—and informs marketers. When this feature is enabled—and it’s probably enabled by default, or after a prompt that really encourages you to enable it without explaining it properly—your smart TV will monitor your watching habits and home phone. To do so, your smart TV will capture sections of video, snippets of audio, still images, or some combination of the three, and upload the data to a “listening … [Read more...] about Disconnect Your Smart TV from the Internet to Stop Tracking
Voice assistants like Siri, Alexa, and Google Assistant are a convenient way to control smart home devices, set timers, hear the weather, and perform other common tasks. But, if you don’t like the “always listening” part, you can avoid it. What We Mean When We Say “Always Listening” Smart speakers (and mobile devices, when they have features like “Hey Siri” or “Hey Google” enabled) aren’t “always listening” in the way you might think. They’re always listening for the voice command that activates them. However, they’re not always recording you. They only record and upload audio when they hear that voice command. Of course, sometimes they hear the voice command incorrectly. A smart speaker, smartphone, or smart watch might think it hears “Hey Siri,” “Hey Google,” or “Alexa” and start listening, uploading something you really didn’t intend for it to hear. That audio might then be listened to by a human being for quality assurance reasons—unless you change your privacy … [Read more...] about How to Use a Voice Assistant Without It “Always Listening”