Ubuntu

Some of the latest Laptops especially Dell Inspiron 5420 and Lenovo G580 series comes with Atheros Network driver which has some problem with Ubuntu 12.04. The problem is that it will not detect the wired network connection(eth0) even though wireless connection is working fine. We can solve this issue by installing the proper network driver.

Unlike proprietary operating systems that comes up with a rudimentary set of applications, Ubuntu and GNU/Linux in general has thousands of freely available Free Software applications available for installation directly from the Internet. These applications are usually available from software archives referred to as repositories. The official Ubuntu repositories contain more than 30000 applications. Having the Ubuntu repositories on DVD can be useful for those users who don't have access to the Internet or has only limited connectivity from the machine where they have their Ubuntu installed but have access from somewhere else to download the repository. Here is a step by step instruction on how to download the complete Ubuntu repositories and build your own set of Ubuntu Repository DVDs. For those who would like to get it done the easy way you can buy a set of Ubuntu Repository DVDs via our RequestCD program

Ubuntu 12.04 comes with a bug that it will not mount the cdrom on proper path and that prevents installation of applications from the Ubuntu Repositories even if you add the repositories via apt-cdrom successfully. Whenever you try to install applications you'll get an error message like E: Unable to stat the mount point /media/cdrom/ - stat (2: No such file or directory) Here is how to fix this problem:

Nmap is a Free Software tool that can be used for a variety of network network exploration tasks and security auditing. Nmap ("Network Mapper") scans IP packets to determine a lot of different aspects about hosts available on the network and also about services these hosts are offering. It can help you find a lot of information about these hosts including reverse DNS names, operating system guesses, device types, and MAC addresses.

The Huawei USB modem that comes with new Reliance Netconnect+ mobile broadband connections might not work out of the box on an Ubuntu 11.10 box if the device id of the modem is 12d1:1505. Plug the modem into a usb port and run lsusb and check if the following line appears in the output - ID 12d1:1505 Huawei Technologies Co., Ltd - and if it does then read on to see how to get this modem working on your computer. Create a file named 12d1:1505 inside /etc/usb_modeswitch.d/ and copy the following into the file DefaultVendor= 0x12d1 DefaultProduct=0x1505

PostgreSQL commonly known as Postgres is an open source object-relational database system which has been around for more than 15 years. PostgreSQL is well reputed with a lot of awards to its name.It runs on all major operating systems, including Linux, UNIX (AIX, BSD, HP-UX, SGI IRIX, Mac OS X, Solaris, Tru64), and Windows. Learn how to install PostgreSQL client and PostgreSQL server in Ubuntu with this step by step tutorial.

Networking in Ubuntu means that you will need to know how to conduct Samba server configuration. Samba is the standard Windows interoperability suite of programs for Linux and Unix. Samba server configuration is essential to seamlessly integrate Linux/Unix Servers and Desktops into Active Directory environments. Here is a step by step tutorial that will walk you through each stage of network configuration using Samba Server in Ubuntu.

Converting videos have come to be a pain in the back for most new Ubuntu users due to the hassle involved in installation of formats and finding a suitable software package. As usual like everything else in Ubuntu the scenario is changing rapidly. Contrary to popular belief, video converting is pretty easy in Ubuntu once your get to know the right tools for the job. FFmpeg is a versatile tool when it comes to converting videos as it is a video converter and so much more.

If you install sendmail on your desktop and have not configured your system correctly you will very likely come across this problem. Ubuntu boot up slows down considerably and stops for a long time at the "Starting Mail Transport Agent (MTA) sendmail" line. This is because sendmail is trying to resolve your host and times out failing to do so. You can fix this problem easily by making a few changes in to yours hosts file.

Rar used to be a favorite compression format when the compressed files were to be split into multiple pieces to fit into legacy external storage devices like Floppy, Zip disk, CD etc. WinRAR is a popular GUI application that can rar and unrar files in the rar format. If however you come across rar files that are split into multiple parts then you can extract and combine them as follows