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So, you’re reading an Ubuntu how to for something, and you come across the sudo command. What in the world is it, and why do you need it? The sudo command is used to allow a regular user to execute a command that requires root privileges. In addition to the user name you provided at installation, [...] Let’s say you’re logged into your Ubuntu machine as an unprivileged user, meaning that you don’t have permission to use the sudo command on the command line. As such, you cannot update the system, install a program, or perform other tasks in the terminal that require the sudo command without logging out and then back [...] This could be very useful to you if you’re working in the terminal and need to step away for a moment. You can achieve a locked screen, just like when you do it the graphical way, with this command entered at the command line, or cli… Let’s say you want to block certain websites. Maybe to keep your kids off of myspace, for security reasons, or to block advertising from being loaded. You can do this by means of your hosts file. By modifying that little file, you can keep certain websites from being accessed from your computer. Here’s how to [...] Locking your screen when you’re away from your computer is very important when there are other people around. You don’t want anyone messing around on your computer. In Ubuntu you can lock your screen very easily. Once your screen is locked, it will immediately start the screensaver. When someone tries to use the mouse or [...] A rootkit is a program (or combination of several programs) designed to take control of a computer system, without authorization. It assumes administrative, or root level control of the system. This control isn’t taken for your benefit, it’s malicious. Antivurs software might not get these little buggers, so root kit detection software comes in. [...] |
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