Whats the diff between them??

I guess you meant BSD instead of DSB?

Anyway... it is not the same thing. Unix vs Linux

I stand corrected! I meant BSD and not DSB. Sorry

Linux is a form of unix, they are 2 different procust completly.

It may seem like Linux is a form of Unix since they are largely compatible, but it isn't true. The discussion at http://webhostingtalk.com/showthread.php?threadid=2114 explains the differences.