Can u give me more information about difference b/w programing languages as u
piece of information.
First off... not all of the languages you listed are considered "programming languages". HTML and CSS are not, they are "document languages". Linux often refers to a group of operating systems. HTML can, in my point of view, not be considered a "programming language" as it lacks control flow constructs as "if", "for" etc (more theoretically: it's far off from being Turing-complete). I'm not sure but I think this also applies to CSS (have never seen any control constructs). Python, ruby, PERL and PHP are script languages that are built on dynamic typing. Java, C and C++ are statically typed languages. This is a very coarse classification and many other properties can be used to distinguish between these languages in a way that makes sense but for a start this answer already might be getting lengthy. :-)
No prob @ all :-)