The Geeky Linux :: Ubuntu/Linux blog :: Open source Tips and Tricks :: Linux Howtos and Tutorials

We can remove applications in ubuntu using apt-get remove command. But it will not completely remove an application. The installed files dependencies and the configurations will remain in the system. This will in future cause to the not needed dependencies and junk files which we are never going to use remain in the system and will eat up the hard disk space. So how to remove an application completely in ubuntu?

I have blogged about the app images in this blog. They are very useful, especially if you do not have the root privilege or you do not want to mess up with your current settings.

So what if you want to create an app image for your favorite app that is not available in the portable linux apps site? There is a good how to created by the blogger tekkidd. He has also created a video tutorial for creating the app images.

You can read the tutorial here and watch the video here

Ubuntu comes with its own shell callled unity and the rest of the distros comes with gnome 3 shell. You can read about my thoughts about unity and gnome 3 shell here. If you want to test gnome shell, you can try the live cd of opensuse and fedora 15 which uses gnome shell by default. But what if you want to test it on your favorite distro called ubuntu..? Why I prefer ubuntu to try gnome shell? I have used fedora live image but I was not able to connect to internet using my mobile. In ubuntu world , everything just works.

I have tried gnome shell in ubuntu/ubuntu based distro using 3 different methods.And from my experience, I have found the best method to try gnome 3 shell in ubuntu. I am going to share with you the details here.

We can easily encrypt files ( whether it is text file,audio or video file) in linux using the command line program called gpg.

To encrypt file:

To encrypt files using gpg, open the terminal and type the following syntax:

• gpg -c /path to file/filename

gpg is the program we are using to encrypt the file. -c switch is used to create the encrypted file. '/path to file' is the path where the file is located and '/filename' is the name of the file to be encrypted.

Recently ubuntu has switched to a new shell called unity which is built on the top of gnome 2.x series while the traditional gnome has migrated to the new incarnation of gnome called gnome 3 and it sports a different shell from the traditional gnome 2 series and unity.

Actually there is not much difference between the user interface of gnome3 shell and unity. But unity uses compiz as window manager while gnome3 relies on mutter. Ubuntu wanted to use compiz but gnome developers preffered mutter. That is the reason why ubuntu developers has created unity based on compiz.