This guide will attempt to explain how to use iptables on linux in easy to understand language.
If you are getting this error then you probably reset the permissions on your hidden .ssh directory in your user folder, and your keys aren’t going to work anymore. It’s very important that these files not be writable by just anybody with a login to the box, so openssh will give you an error if you try to use them.
If you want to “map a drive” from a Linux computer to a shared folder on a Windows computer or a shared folder on a Linux computer running Samba, there’s a simple way that you can do this from the command line.
If you use the rsync utility to keep your backups synchronized from your database server over to your backup or secondary file server, you might want to prevent the script from using too much bandwidth. Here’s how.
If you just can’t get used to the new Libraries feature in Windows 7, you can easily disable it with a registry hack—though we’d recommend learning about the benefits instead of disabling it.
If you’re working with some awful corporate system that should have been retired in the dark ages, you might have had to produce a file from Excel with some weird delimiters other than comma or tab-delimited to import into the system. Here’s the trick on how to do it.
The latest Firefox Beta is rather awesome, with tabs on top, and a new menu that looks like an awful lot like Opera. It’s all very slick, until you try and install your favorite extensions that haven’t updated yet. Here’s how to force them to work.
If you’ve spent more than five minutes using Ubuntu, you might have noticed that the System menu doesn’t have any icons, but the other ones do. Why? Who knows! Either way, here’s how to enable those missing icons.
If you’re a programmer that uses TortoiseSVN to manage your Subversion source control project, you might wonder how to easily disable the menu items without completely uninstalling. Here’s a quick way to do it.
If you’ve just updated to the Dev or Beta release of Google Chrome, you might have noticed that a special version of Adobe Flash is now integrated into the default distribution of Chrome. But what about your old plug-in?
Do you actually use the Windows 7 power management features? If so, have you ever wanted to just delete one of the built-in power plans? Here’s how you can do so, and why you probably should leave it alone.
Have you ever browsed over to another PC on your network using “network neighborhood”, and then connected to one of the file shares? Without a drive letter, how do you disconnect yourself once you’ve done so?
If you’re reading this article, you’ve probably noticed the .recently-used.xbel file in the root of your User folder, and you’re wondering why it keeps constantly coming back even though you repeatedly delete it.
Ever been doing some work at the command line when you realized… it would be a lot easier if I could just use the mouse for this task? One command later, you’ll have a window open to the same place that you’re at.
One of the biggest annoyances with a dual-boot system is having to wait for your PC to reboot to select the operating system you want to switch to, but there’s a simple piece of software that can make this process easier.
If you’re doing any work with networking, you probably need to know the name of your computer. Rather than diving into Control Panel, there’s a really simple way to do this from the command prompt.
If you have to deal with a lot of spreadsheets, you’re probably really bored right now. You also might be wondering how to turn a row into a column, or a column into a row. Here’s how to do it with Google Docs Spreadsheets.
Giving a computer to somebody else? Maybe you’re putting it out on Craigslist to sell to a stranger—either way, you’ll want to make sure that your drive is completely wiped, scrubbed, and clean of any personal data. Here’s the easy way to do it.
If you’ve actually used the internet before, you’ve probably come across a page with an auto-playing YouTube clip, and chances are good it was a rather annoying one. Here’s how to stop them from starting automatically in Chrome.
Have you ever wanted to fill an entire row or column with a series of values? If you’re an Excel user, you can do the same thing in Google Docs. If you haven’t used either, here’s the quick way to do it.
As a computer geek, I often find myself helping people, and watching them change settings on their PC… and they almost always click the Apply button, and then the OK button. Why?
Have you ever been browsing through photos or videos on your PC, and noticed that the thumbnails weren’t showing up properly? Sometimes they get corrupted, and you can quickly rebuild them to fix the problem.
Have you ever typed something incorrectly into the Firefox address bar, and then had it take you to a page you weren’t expecting? The reason is because Firefox uses Google’s “I’m Feeling Lucky” search, but you can change it.
Remember how previous versions of Windows had an Internet Explorer icon on the desktop, and you could right-click it to quickly access the Internet Options screen? It’s completely gone in Windows 7, but a geeky hack can bring it back.
Have you ever wondered how to disable useless or insecure browser plug-ins in Google Chrome? Here’s the lowdown on how to get rid of Java, Acrobat, Silverlight, and the rest of the plugins you probably want to get rid of.