User accounts can be assigned to one or more groups on Linux. You can configure file permissions and other privileges by group. For example, on Ubuntu, only users in the sudo group can use the sudo command to gain elevated permissions. If you’re using a new Linux laptop, you might have some type of GUI interface to configure these settings (depending on the distribution that you’re running, at least) but realistically it’s almost always easier to just drop down to the terminal and type out a few commands, so that’s what we’re showing you today....

The new device can monitor the air in your home for various forms of particulate matter. It’ll sift through the air for carbon monoxide, dust, and volatile organic compounds. It won’t actually clean the air for you, so you’ll need to open a window, run a fan, or get an air purifier if you want to actually change the current state of the air in your house. It’s nice to know whether you need to take those steps based on the actual air you’re breathing....

RELATED: Are Smart Homes Worth the Investment?

There’s been a lot of talk about Apple’s controversial on-device CSAM scanner. It appears the company has heard some of the issues, as it has decided to delay the rollout until it can make more improvements. Apple’s CSAM Scanning Technology Apple first announced its child sexual abuse scanning last month, and it was met with some resistance. Scanning images when they’re uploaded to the cloud is nothing new, but Apple said it intended to hash scan images on the user’s device, which some people felt was an invasion of privacy....

I’m not a gamer. I don’t own any video game consoles. Video games are not part of my identity. One game, however, holds a special place in my heart—Commander Keen: Secret of the Oracle. It’s a strange story. A lot has been said about the Commander Keen series and the role it played in changing PC gaming. I’m not here to give another history lesson, though. My relationship with Keen is an unlikely one....

The headset is a collaboration between online retailer Drop and EPOS Audio, formerly a division of Sennheiser. While the company affiliation may have changed, the people behind EPOS haven’t and the engineers behind the H3X also worked on the popular PC37X and PC38X headsets from Sennheiser. While this headset is based on the EPOS H3, Drop always likes to tweak a few things for its collaborations with companies. Did this matchup result in a great gaming headset without the giant price tag, or should you keep searching?...

What Does the “I’m Feeling Lucky” Button Do? The premise of the “I’m Feeling Lucky” button is simple. You type a search query and click the button, and Google takes you directly to the first webpage among its search results. You skip past the search results page with its advertisements and other Google features. In the best-case scenario, with just one click, you are right where you want to be. This saves you time and can be convenient when you are sure you will land on the right webpage....

On the web, pop-up windows are often considered a nuisance. But sometimes, you need to enable pop-ups in Microsoft Edge for certain websites to work properly. Luckily, it’s easy to allow pop-ups on all sites or only specific sites in Edge for Windows 10 or Mac. Here’s how. How to Enable Pop-Ups on Every Website in Edge First, open Edge on your Windows PC or Mac. In any window, click the menu button (three dots) in the upper-right corner....

Online shopping is great, but typing in your credit card number on every new website can get annoying fast. Here’s how to skip the typing and check out sooner, whether you’re on your iPhone, Android phone, PC, Mac, or Chromebook. Save It in Your Web Browser Your web browser can store your credit card details and fill them in whenever you want. On an iPhone or iPad, this is part of the Safari browser’s settings....

It’s dinner time. You’re just sitting down when you get a call. On the other line, a robotic voice says: “We have important information regarding your credit accounts. Please hold to speak to a representative.” click How many times has that scenario happened to you or someone you know? Even if the answer is “once,” that directly translates to “too many times.” It’s scammy, annoying, and downright rude. If you have an Android phone, though, you don’t have to deal with it....

One of the first things you’ll need to learn as you become more familiar with Command Prompt on Windows 10 is how to change directories in the operating system’s file system. There are a few ways you can do this, so we’ll walk you through them. First, type “cmd” in the Windows Search bar to open Command Prompt, and then select “Command Prompt” from the search results. With Command Prompt opened, you’re ready to change directories....

When you turn on your Roku television, streaming stick, or set-top box, you’ll see the Home page with all of your apps. Over on the left-hand side, you’ll want to scroll down to the “Settings” option using your remote control. From the Settings menu, select the “Parental Controls” button. You will be asked to enter your old four-digit PIN. As long as you entered the correct PIN code, you’ll now be able to adjust the parental controls on your television....

If you’ve changed your identity, or you’d just like to use a different name, it’s easy to change your eBay username. We’ll show you how to do that for your account. RELATED: How to Change Your Snapchat Display Name (Not Username) What to Know When Changing Your eBay Username When you change your username, eBay shows your new username across its entire platform. Your account information and feedback score are transferred to your new name....

RELATED: Do You Need to Update Your Computer’s BIOS? Be very careful when updating your motherboard’s BIOS! If your computer freezes, crashes, or loses power during the process, the BIOS or UEFI firmware may be corrupted. This will render your computer unbootable — it’ll be “bricked.” How to Check Your Current BIOS Version in Windows Your computer’s BIOS version is displayed in the BIOS setup menu itself, but you don’t have to reboot to check this version number....

All you’ll need is the Google Fit app and an Android phone to use these features. They were first introduced on Google Pixel phones, so they may not be available on every single Android device at present. RELATED: How to Export Your Google Fit Data First, open the Google Fit app on your Android device and sign in with your Google account. If this is your first time signing in, you’ll be asked to enter some information about yourself, including your gender, birthday, weight, and height....

Creating an intro for your PowerPoint using the signature Star Wars text crawl during the opening scene is an excellent way to captivate your audience, getting them more interested and engaged in your presentation. Creating the Star Wars Intro Crawl in PowerPoint First things first, you need to add an image of a clear, starry night sky as the background of our slide. Locate the image online or, if luck is on your side and you have a good camera handy, go outside and take one yourself....

RELATED: How to Use Snapchat: The Basics of Sending Snaps and Messages What Is a Public Profile on Snapchat? A public profile on Snapchat lets you connect with a wider audience. In this profile, you add information that you want the public to see. This includes your photo, bio, and description—which can be different from your regular Snapchat profile. You can also post Stories and Lenses in your public profile....

Mounting your TV to the wall is not only a great way to save space, but it also looks nice and clean. However, there’s a little more to it than just buying a wall mount and screwing in your TV. Here are a handful of things you should know when it comes to mounting your TV to the wall. Decide Where to Mount Your TV First off, you need to figure out exactly where you want your TV to go....

Remember SkiFree? Microsoft is one-upping Google Chrome’s hidden dinosaur game. Microsoft Edge has a secret surfing game that works offline. It’s SkiFree with a fresh new coat of paint, swapping out yetis for the Kraken. It was added in Microsoft Edge 83, released in May 2020. How to Access the Surfing Game To access the game, type edge://surf into Edge’s address bar and press Enter. It will load immediately. The “edge://” part of the address signifies this is an internal page that’s built into the Microsoft Edge application itself....

Okay, it’s not that bad. But you’ll want to change your password and gain access to your account as quickly as possible. Gmail’s Standard Recovery Procedure Gmail has a few different ways to confirm your identity and recover (or reset) your password. Thankfully, they’re all laid out in a nice little wizard that Gmail will walk you through step-by-step. Starting the password recovery process is pretty easy: just click the “forgot password” link on the Gmail sign-in page....