Download Youtube Videos from terminal

It is very simple to download videos from Linux terminal.
Just download the following package using this command in Ubuntu

$ sudo apt-get install youtube-dl

After the installation is complete, use the following command to download videos from youtube

youtube-dl www.youtube.com/watch?v=(random)

Videos by default are downloaded in home folder. Look in your home folder for downloaded videos

Ubuntu Showing old GUI buttons and menus

One day when I started my ubuntu, everything was changed. It was suddenly changed into Windows 95. I thought of googling it but was not able to figure out what to write in google. After a little search and help from AskUbuntu.com I was able to figure out the reasons. But none of them worked for me. Here the page where solutions are given
http://askubuntu.com/questions/73576/appearance-does-not-change-on-switching-the-theme

 You can take help from this page but none of them worked in my case. After sometime I was hit bya n thought that I had installed GTK 3.4.2 recently on my Ubuntu. So I removed it and rebooted and every thing was working just fine...:)

Nvidia Drivers Installation on Dell N5110

Don't expect me to write the steps of installation of Nvidia drivers on Ubuntu because you will not install it as it will lead to very harmful consequences. Enjoy your laptop with nvidia drivers, Drivers will not improve the performance of laptop in any way so please.