Techs Palace

PowerDNS is a DNS server, written in C++ and licensed under the GPL. It consists of two parts: Authoritative Server Recursor. PowerDNS can work as only one of them or both. Authoritative server answers queries about domains it is authoritative for i.e. nameserver while Recursor will query other nameserver in Internet to find about the query it was asked with. PowerDNS can use other DNS server for recursion or use PowerDNS Recursor (pdns_recursor) which is ran as a separate process. PowerDNS is a product of the Dutch company PowerDNS.COM BV, with numerous contributions from the Open Source community. The principal author is Bert Hubert. Installation Make sure that there are no other DNS servers are running on your system. Otherwise you will get an error " Binding to UDP socket: Address already in use " #netstat -tuplan | grep 53 This will show if port 53 which is used by DNS servers is open . If you find port 53 opened, you have to either stop the correspo...

While opening Nvidia X Server Settings you may get the following error: Could not launch 'NVIDIA X Server Settings' Failed to execute child process "/usr/bin/nvidia-settings" (No such file or directory) More precisely I got this error after upgrading to Lucid from Karmic. This just means that necessary package is missing. You can easily solve this by installing nvidia-settings package. Open Ubuntu Software Center from main menu and search for nvidia-settings and install it. Now you can open Nvidia X Server Settings from administration menu.

Isn't it beautiful, you can control your computer from your mobile phone. With the help of your phone you can control which song to listen while lying on your bed.  All your phone need is Bluetooth or InfraRed or Wi-Fi. To do so first of all install anyremote . You can also use ganyremote or kanyremote which are graphical frontend for GTK and KDE respectively. In your Ubuntu Software Center search for anyremote and install it. We'll configure anyremote in server mode, if your phone supports AT mode you may want to try that as well. If you are confused on which mode to choose click here . We'll use Bluetooth for connection. Make sure that  your phone and computer is paired. If you don't know how to, here is a short instruction. In Bluetooth setting make your phone visible. In your computer right click the bluetooth icon (in panel) and click new device Follow the on screen easy instruction. Now run this command on your computer (termin...

Q. I have one user account. I want to use the same account but under different login. I also want to change the real name of that account. How can I do so ? A. We use the help of the command usermod . Completely logout from the current user. i.e. the user you want to change. Logout from GUI and virtual console if you have. Login to virtual console as root or as a sudo capable user but not the user you want to change usermod -l new_user_name old_user_name groupmod -n new_user_name old_user_name usermod -d /home/new_user_name -m new_user_name usermod -c “Your full new Real Name” new_user_name That's it. Now your old user name is changed to new user name including your real name. In Lucid Lynx, the LTS version of Ubuntu released recently, you can do it graphically from About me and User accounts.

I had removed "Envelop" from panel in Karmic. After upgrading to Lucid, my volume  and battery icons were no where to be seen. Turns out there are indicator-message, indicator-sound, indicator-application and indicator applet which hosts various programs. Indicator message is responsible for hosting Empathy, Pidgin and Evolution. I don't need this. Indicator Sound is responsible for volume icon. I do need this back. So the solution was to remove indicator-message. (Only if you don't want the 'Envelop') sudo aptitude remove indicator-message Be careful that you remove only indicator-message. Now right click your panel and click add to panel. Search for Indicator Applet and add it.

One of the feature (feature I must say) in Facebook Chat is the ability to appear online to only certain friends. Without this and with all your friends from childhood to adulthood, with family members and with all the girls you liked your Facebook chat would be lot messy and useless too. Open your Facebook Chat You'll see your friends inside the friend list. Each friend list has a green/gray status bar with a white circle. Click it to go offline/online for that friend list.