hello,
i m new user in this forum....i need ur help 
. Can anyone tell me which Operating System from Linux, Unix,FreeBSD,MacOSX, and Solaris.... has the best file System? and Y it is best for this OS?
regards....
OS v's OS posts are not allowed in these forums, and anyone who would answer this would be making that type of post, this thread is now closed.
As a general point there is almost never one "right" answer to a question in the Unix world. A filesystem which is very good for one purpose may not be good for another, unless you have very specfic requirements in mind, the only way you will find the answer is to try them and see which one works best for you.