yum update Red Hat Linux / Fedora

Yum (Yellowdog Updater Modified) is a powerful automatic updater and package installer/remover on RPM-based Linux distributions like Red Hat / Fedora.

Yum automatically computes dependencies and figures out what things should occur to install packages. It makes it easier to maintain groups of machines without having to manually update each one using rpm.

The main Yum configuration file is /etc/yum.conf. Basic repository listings are located in the /etc/yum.repos.d/ directory. Unless you plan on adding other repositories or have a need to tweak certain configuration settings, these configuration files work as-is. Please refer to yum.conf manual page to find out the various options for this configuration file. You may like to take note about the keepcache option in this file. Set keepcache=1 if you want to keep the downloaded RPM files from erased after they are installed. However, make sure the cachedir directory has enough space to save the downloaded files.

How to determine / find CUPS version

Simply execute the following command in your Unix machine to determine what version of CUPS running on your system.
# cups-config --version

cups-config is the CUPS program configuration utility. Some of the option available for this utility include:

--api-version: current API version (major.minor).

--cflags: necessary compiler options.

How to delete printer port in Windows

In order to delete TCP/IP printer port in windows systems, follow the following steps:

1. Open the printers folder - Start, Setting, Printers
2. Remove the related printers using the printer port
3. Select "Server Properties" from "File" menu
4. Select the Ports tab
5. Delete the related port here.

That's it!

What laptop to buy

Actually nowadays, majority of new laptops marketed are having sufficient performance to run latest OSs.

But basically i will check:

1. How much memory it has: nowadays, at least 4GB is needed if you are installing windows 7, for XP, 1GB may be sufficient.
2. How much hardisk you need. 1TB will be preferred nowadays.

How to disable beep sound in Dell Latitude

1. Open "Device Manager"
2. Click on "View"-Menu
3. Select "Show hidden Devices".
4. Click on "Non-Plug and Play Drivers".
5. Right-click on "Beep" and choose "disable".
6. Reboot your notebook.

Do I need to buy antivirus software for my PC?

It depends.

If you have budget constraint, you may like to try anti virus free software. I have been using AVG Free Anti-Virus software for years. It works really fine so far. Updates are always available. AVG Free Anti-Virus can be downloaded from http://free.avg.com/.

How to download more than 2 files at a time in Firefox

In Firefox, when you try to download a couple of files at the same time, you might have noticed everything adding up in the download manager but only two files get downloaded from a server at any moment. The process of changing this limitation is pretty simple.

Step 1: Open Firefox and type about:config in the address bar and press 'Enter'