I moved from windows to Ubuntu and I'm trying to understand if all the prgrams in Ubuntu are portable?
In Windows, you can use a regular program which spread it's files all over the FS, writes to the registry and has an entry in the add/remove menu, or you can use a portable program which store all it's data and files in one folder.
so,for example, it I want to have two different versions of Eclipse, that wasn't a problem in Windows because Eclipse is a portable application, but in Ubuntu I got Eclipse by apt-get, and in it there is only one version I can manage. So how can I do it?