Bash Shell is a powerful stuff in Linux. We can do almost everything there. Installing and removing applications, doing system upgrade, downloading files, even listening to your favorite songs. Although, there are many GUI applications which can do such tasks, many people still love using command prompt because it's handy, incredibly fast and we can see exactly happens in the background. If you are one of those people who loves using command prompt to perform such tasks, you might want to read this post on how to modify bash prompt.