Which version of Linux am I using?
 

I recently installed Linux Ubuntu 11.10 64 bit, and it has further been upgraded online. I need to add files to a Website, and the server is asking if I am using Nautilus or Konqueror, but I don't know how this relates to the version I have got. How can I find out?

Thread title: "Which version of Linux am I using?"
First sentence: "I recently installed Linux Ubuntu 11.10 64 bit"
That answers that then.....
But if you ever DO need to answer that question, the command "uname -a" will answer it for you.

Now onto the ACTUAL question, if you are using gnome, then you are using nautilus. If you are using kde, you are using Konqueror.
As for finding the version of the above. Running it from the command line with the "--version" option.

Ubuntu 11.04 comes with Unity as default Desktop Manager. Unity still uses nautilus as file manager.

Good luck to you!

Well, it doesn't, necessarily. The default does, but we don't know if you are running the default.

If you want to know all of the tasks that you are running at any time, something like ps -ef (in a command line shell) will tell you. That probably throws up (way) more stuff than you'd like, but

should throw up whether you have any instances of konqueror (or anything else starting with konqu) running. Similarly

should show any instances of of Nautilus. And that's fine, provided that you are only running one or the other. Alternatively, 'help' in the appropriate app should give you a heavy clue.