Shashank Sawant's questions

I am trying to change the default pdf viewer on my Kile Latex frontend. When I reach Settings ▸ Configure - Kile ▸ Tools ▸ Build ▸ ViewPDF I am able to make the appropriate change.

Unfortunately, in the pop-up window for Configure - Kile, I am not able to see the bottom right corner. A right angle with an arrow does appear near the top left corner. But I am not able to resize the window using it. Consequently I am not able to save the changes, rendering the entire operation pointless.

The only option available on the top bar of the pop-up window is to close it. There's no minimize or restore option available.

EDIT: I am using Ubuntu 11.10, with Virtual Box (Full screen mode) along with gnome (version 3.2.1). I dislike Unity. But I guess my current predicament is because I have gotten rid of Unity.

EDIT (Images explaining the issue):
Screenshot when I open Configure - Kile:

Screenshot when I reach the ViewPDF option:

There's a GUI in Windows to edit the path variable. I was wondering if there's something equivalent in Ubuntu to do the same.

In Windows there’re perhaps only a couple of important folders (by important I mean important in my logical picture of the Windows file system) in the installation drive (in my case C:\). Namely Program Files and Windows. I simply stay away from Windows folder and the “add remove program files” is good enough to handle the program files folder of Windows. Of course there’s a folder named Users where the users (who are not admins) can access only their folders.

Thus there’s a clear picture at some level in my mind of the Windows file system. In Ubuntu, when I reach the location /, there’s a huge list of folders, most of which I have no clue as to what they contain. The /bin folder seems to be the equivalent of the Windows folder in windows. The /usr folder seems like it’s the equivalent of the Users folder in Windows. But even the /home folder looks like it can fit the bill.

Please understand that I do understand, that Ubuntu (Linux) has a different character than that of Windows, i.e., there need not be exact equivalent of Windows functions, in Ubuntu. All I am looking for is a bit more clearer picture of the Ubuntu file system.

_{This question is a part of a bigger question which I am splitting up to make it more answerable. The original question can be found here:
http://sgsawant.wordpress.com/2012/05/17/whats-the-equivalent-of-add-or-remove-programs-in-ubuntu/}

I wanted to install the plugin TeXlipse (installation instructions) and for that I am supposed to remove any previous version of it. Maybe the eclipse GUI is sufficient to achieve this end.

What's the equivalent of "add or remove programs" in Ubuntu?