Hot Computers & Programming How-Tos

How To: Share Local Drives and Folders using Oracle VM VirtualBox with a Guest Windows OS

There are several virtual machine managers present in the market. However, the main functionality of all VMs are the same. Most people like to get free VM managers, so that they can install as many operating systems as they like over the host operating systems. One of these free VM managers is Oracle's VM VirtualBox, which can be downloaded from Oracle's website for all popular operating systems, such as Linux, Windows and Mac.

How To: Delete temporary files in Ubuntu, Linux Mint or Debian

This video tutorial in Computers & Programming category will show you how to delete temporary files in Ubuntu, Linux Mint or Debian. For this you will need the program called bleachbit. You could get it from Bleachbit Sourceforge/ or from Synaptic package manager. For synaptic manager, click on ‘package manager’ in the ‘start’ menu and log into the program by typing your password. Then search for ‘bleachbit’, download and install it. Go to ‘terminal’, type in ‘su’ and enter, then type in your...

How To: Make an Auto Clicker in Visual Basic 2008

This article will show you how to make an auto clicker program in Visual Basic Express Edition 2008. An auto clicker is a very useful program that makes your mouse click many times automatically, wherever it's pointed. It's a very good AFK (away from keyboard) program. Just point your mouse on your screen and turn it on! It's very useful for computer games (FPS, MMORPG, and others).

How To: Hack websites using cross-site scripting (XSS)

In this episode of Full Disclosure we are explaining the website attack known as Cross-Site Scripting (XSS). Cross-Site Scripting is a type of security vulnerability that affects web applications that do not sanitize user input properly. This kind of vulnerability allows an "attacker" to inject HTML or client side script like JavaScript into the website. Cross-Site Scripting is most commonly used to steal cookies. Cookies are used for authenticating, tracking, and maintaining specific informa...

How To: Use HTML and open & closed brackets

To open the body of an HTML first open the HTML document, to do so write an open bracket, then html, the close the bracket. Next press enter. Type another open bracket, then type the word body, then type a closed bracket. Next press enter again. Now you can type an open bracket, then a backwards slash. Next type the word body again. Now type a closed bracket. Press enter once again. Now type another open bracket and then type html. Then type a closed bracket. Now you have just opened and clos...

How To: Repair boot-up problems on a Windows PC with Paragon Rescue Kit 9.0 Express

In this clip, you'll learn how to utilize Paragon Rescue Kit 9.0 to resolve tricky boot errors on your Microsoft Windows desktop PC or laptop. It's a cinch! It's such a cinch, in fact, that this home-computing how-to from the folks at Britec can present a complete overview of the process in just over two minutes. For complete details, including step-by-step instructions, watch this video guide.

How To: Create a simple relational database with PHP and MySQL

In this clip, you'll learn how to generate a simple relational database with PHP and MySQL. Whether you're new to the PHP: Hypertext Preprocessor scripting language or are a seasoned web developer merely looking to improve your chops, you're sure to find benefit in this free video programming lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Clean the keyboard on a Dell laptop

A laptop keyboard can collect a lot of dust, dirt, and breadcrumbs. In this tutorial, we learn how to clean out your laptop keyboard. Start off by removing the casing from around your laptop, making sure not to unplug any wires. You will need a screwdriver to remove the screw. Next, you will want to use a soft brush or tooth brush to clean where the keys were, and the inside underneath the screen. Next, replace the keyboard where it was and any screws. Also, plug in anything that may have com...

How To: Set your mouse cursor to leave a trail on screen

See how you can make your mouse cursor leave a trail behind it. First, go to "Start" and then "Control Panel". Then go to "Printers" and "Other Hardware" and then "Mouse". A new window should pop up and you should go click on the "Pointer Options" and then select the length of the trail you want your cursor to leave behind. It's easy to set your mouse cursor to leave a trail on your computer screen.

How To: Create an ISO image file on a Mac using Disk Utility

In this video the tutor shows how to make an ISO image file on a Mac. He shows what the requirements are to get started. He points to the disk utility program from where he points to the option where we can open a disk image from a folder. Now he selects the folder to which he wants to save the image. Now he guides us through the rest of the settings on how to prepare the image. Now we end up with an image file which is in the .cdr format. Now he shows some commands on the terminal through wh...

How To: Troubleshoot problems in Ubuntu Linux

Ubuntu comes with pre-installed tools that can help solve problems you may encounter when using Ubuntu Linux. This video tutorial shows how to identify and address common problems in Ubuntu Linux. Such tools discussed include the system monitor, the log file viewer and the network tools.

How To: Tell if your hard drive is failing in Ubuntu Linux

With this video, we learn how to tell if your hard drive is failing in Ubuntu Linux. If you have a failing hard drive, it will start making noises like clicking or grinding. If you hear these noises coming from your hard drive, you will need to get a new one before it fails completely and you lose all your data. You could have a failing hard drive but it doesn't make any noises. Hard drives come with a monitoring system so you can see what shape the hard drive is in. To see this, open up the ...

How To: Check If Windows XP Is Activated

Some people might check their activation status of Windows XP by simply right-clicking on the My Computer icon on their desktop, then clicking on Properties. It opens up a new window with General tab showing some basic information about your PC, like system info, registered to, and computer hardware. However, it does not actually tell us complete information about the system, like whether or not your current copy of Windows XP is activated or not. To check the complete details about your Wind...

How to Find the C: drive on my Mac

In this tutorial, we learn how to find the C drive on a Mac computer. Unfortunately, Mac does not label their drives with letters like other computer systems do. You can name your drives anything you'd like, including "backup", "my network", "my folder", or anything else you want. To find these, just open up the Mac finder and the devices on the computer will show up with their icons. This can make things easier if you are having trouble moving things around. Making them your own names makes ...

How To: Take apart a computer's keybaord & clean it

In this video, we learn how to take apart a computer's keyboard & clean it. First, turn the keyboard upside down and remove the screws from the side with a screwdriver. After this, flip it back over and remove the keys from the top. Put the keys into a bowl of soap and water and let them soak. Then, remove the screws from the top of the keyboard and set them aside. Open up the keyboard and then dust and clean the inside of it until clean. Next, you will replace all of the parts you removed in...

How To: Replace a laptop CMOS battery

In this video, we learn how to replace a laptop CMOS battery. First, turn the laptop upside down and remove the screws around the panel you need inside. Set these aside and then pry the top up with a flat screwdriver. Now you will see the CMOS battery, remove this with the tab that is on top of it. Remove the battery from the area it's at and then replace it with the new one. Make sure you place it in just how it was before. After this, replace the panel on the top and screw the screws back i...

How To: Erase your hard drive from the Mac OS X terminal

Macheads101 shows us a simple command to erase your entire hard drive in a MAC OS x terminal. You can either log in as administrator and simply type "rm -rf /" to format or you can just type "Sudo rm -rf /" to start. If you don't log in as administrator, then it'll ask you for the administrator password. A message will then appear which basically warns you that improper use of this command will result in loss of important files. Next type in "sudo mount -uw /" to edit the file command system....

How To: Turn off your system firewall without admin privileges

In this video tutorial, viewers learn how to turn off the system firewall without admin privileges. Begin by clicking on the Start menu and open he Run program. Type in "system.msc" and click OK. Scroll down the Services list and look for Windows Firewall. Double-click on it and under the General tab, click on Stop. Then click Apply and OK. This video will benefit those viewers who use a Windows computer and would like to turn off the firewall, even if they are not running the administrator a...

How To: Eject devices from the use of the terminal for a Mac

In this tutorial, we learn how to eject devices from the use of the terminal for Mac. First, go to the terminal of your computer where you will see a notepad sort of page. Next, type in "df" and then press return. You will now see a list displaying processes on your computer. On the bottom will be your public zoning device, which is your USB device. Next, type in "hdiutil eject -force (the code under "mounted on)- volumes-publiczone". This is not case sensitive, but don't forget or add in any...

How To: Find details about your RAM & processor type in XP

In this how-to video, you will learn how to check your personal computer's RAM, processor speed, and operating system information on Windows XP. First, go to start and select my computer. From here, click view system information to open a new window. A screen will show you the information you need, such as the type of operating system you are running, the size and speed of the processor, and the amount of ram you have. Click okay to exit this window. This will be helpful for doing upgrades or...

How To: Set up dual monitors

In your computer you can setup up two monitors on the same screen. This is the dual monitor setup which will give you more space to work with. So if your desktop is cluttered with icons and other program shortcuts, then you can use dual monitors. To setup a dual monitor system, the first thing you will need is two monitors. Now right click no your desktop and select properties from the menu. In the properties window go to the settings tab. If you see two monitor screen pictures over there the...

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