Sharky's Notebook

Here is an overview on howto use ufw the Uncomplicated Firewall:

Lets turn UFW on:
sudo ufw enable
When you initially turn the firewall on, it is in ACCEPT mode, and will accept everything incoming and outgoing until you make rulesets.

The simple syntax to allow an incoming/outgoing connection on a specified port to any host would be:
sudo ufw allow 53

Wallpapoz is an easy to use wallpaper changer application for GNOME.

Well what is Ubuntu Tweak? Ubuntu Tweak is an application designed to config Ubuntu easier for everyone. It provides many useful desktop and system options that the default desktop environment doesn't provide. At present, It is only designed for Ubuntu GNOME Desktop, and often follows the newest Ubuntu distribution.

Source @ Ubuntu-Unleashed

Ever wanted to print a document of just about any sort to a virtual printer that would then turn it into a PDF? It’s pretty easy to do in Ubuntu. In fact you’ll need just 5 steps and about as many minutes of your time to set this up.

Step 1. Get cups-pdf installed. Open up a terminal session (or use Synaptic) and type the following: