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Chris Hoffman

Chris Hoffman is a technology writer and all-around computer geek. He's as at home using the Linux terminal as he is digging into the Windows registry. Connect with him on Google+.

ADB, Android Debug Bridge, is a command-line utility included with Google’s Android SDK. ADB can control your device over USB from a computer, copy files back and forth, install and uninstall apps, run shell commands, and more.

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Windows 7’s backup control panel has the ability to create full system image backups. While Windows says you can’t restore individual files from these backups, there’s a way to browse the contents of a system image and extract individual files.

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Antivirus programs are powerful pieces of software that are essential on Windows computers. If you’ve ever wondered how antivirus programs detect viruses, what they’re doing on your computer, and whether you need to perform regular system scans yourself, read on.

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Migrating to another virtual machine program can be intimidating. if you already have your virtual machines set up they way you like them, you don’t necessarily have to install them from scratch – you can migrate your existing virtual machines.

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Security breaches and password leaks happen constantly on today’s Internet. LinkedIn, Yahoo, Last.fm, eHarmony – the list of compromised websites is long. If you want to know whether your account information was leaked, there are some tools you can use.

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When you a delete a file, it isn’t really erased – it continues existing on your hard drive, even after you empty it from the Recycle Bin. This allows you (and other people) to recover files you’ve deleted.

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Internet Explorer-haters often say that the only good use for Internet Explorer is downloading Firefox or Chrome. But if you really don’t like IE, you can use Windows’ built-in FTP support to download and install Firefox without ever opening IE.

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Android includes a built-in way to back up and restore the contents of your phone or tablet. All you need is a computer and a device running Android 4.0 (Ice Cream Sandwich) or newer.

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Glance at your keyboard and chances are you’ll see a few keys you never use near the top-right corner – Sys Rq, Scroll Lock, and Pause / Break. Have you ever wondered what those keys are for?

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We all know backups are important, but we rarely think about backing up our email. GMVault can automatically back up your Gmail to your computer and even restore the emails to another Gmail account – convenient when switching Gmail addresses.

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Group Policy is a Windows feature that contains a variety of advanced settings, particularly for network administrators. However, local Group Policy can also be used to adjust settings on a single computer.

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Linux’s terminal commands are powerful, and Linux won’t ask you for confirmation if you run a command that won’t break your system. It’s not uncommon to see trolls online recommending new Linux users run these commands as a joke.

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Google can do more than display lists of websites – Google will give you quick answers to many special searches. While Google isn’t quite as advanced as Wolfram Alpha, it has quite a few tricks up its sleeve.

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The Windows Task Scheduler can automatically send email at a specific time or in response to a specific event, but its integrated email feature won’t work very well for most users.

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On Linux, the Root user is equivalent to the Administrator user on Windows. However, while Windows has long had a culture of average users logging in as Administrator, you shouldn’t log in as root on Linux.

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VNC allows you to remotely access a computer and use its desktop, either over the Internet or from another room in your house. Windows includes a Remote Desktop feature, but it’s only available in Professional editions of Windows.

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Virtual machines are demanding beasts, providing virtual hardware and running multiple operating systems on your computer at once. Upgrading your hardware (particularly your RAM and CPU) will always help speed up virtual machines, but there’s more you can do.

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User Account Control is an important security feature in the latest versions of Windows. While we’ve explained how to disable UAC in the past, you shouldn’t disable it – it helps keep your computer secure.

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Have you ever wanted to create a custom Google search engine that searches only specific websites? You can easily do this with Google’s Custom Search Engine tool. You can bookmark your search engine and even share it with other people.

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Many new laptops come with NVIDIA’s Optimus technology – the laptop includes both a discrete NVIDIA GPU for gaming power and an onboard Intel GPU for power savings. The notebook switches between the two when necessary.

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When you create a virtual hard disk in VirtualBox or VMware, you specify a maximum disk size. If you want more space on your virtual machine’s hard disk later, you’ll have to enlarge the virtual hard disk and partition.

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VirtualBox’s experimental 3D acceleration allows you to use Windows 7’s Aero interface in a virtual machine. You can also run older 3D games in a virtual machine – newer ones probably won’t run very well.

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Do you want to save time when installing Windows 7? You can create a customized installation disc and have it perform an installation without asking you questions, integrate updates and drivers, tweak Windows, and remove Windows components.

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Have you ever wanted to monitor who’s logging into your computer and when? On Professional editions of Windows, you can enable logon auditing to have Windows track which user accounts log in and when.

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Some of the most powerful Windows features are only available in Professional or Enterprise editions of Windows. However, you don’t have to upgrade to Windows Professional to use these powerful features – use these free alternatives instead.

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