Dear all

I am bigineer with Linux. if you have experience guide me what version of linux is better (fedora, suse, ...) for sientific work (compatible with related open sources, networking and parallel cmputing and so on).

What is main difference between Unix OS and Linux, what is better?

Kind Regards

Check the site www.distrowatch.com. It has an updated rank with tens of distribuitions (the versions you refered to), with links to them. The top 2 are ubuntu and suse. I use both of them, and it's hard to say which is better. Online updates are easier with ubuntu, but the Yast tool, provided by suse, makes the administration of your computer much easier.

I use slackware and suse. As previous poster said, the yast tool of suse makes administration quite easy. If you want large control during installation you might want to look at gentoo.

Btw, if you use a commercial cfd software they typically support suse and redhat (not that this matters too much).

The OS is not particularly important for scientific work except that there is generally more relevant software freely available on Linux and unix.

If you are new to Linux and unsure what is going on then you are probably better off installing one of the main distributions since they have more documentation and better developed administraton and installation software for the uneducated about how Linux works. The Suse distribution is probably the most capable in this respect.

> What is main difference between Unix OS and Linux

Unix comes in two main flavours: BSD and System V. The former was primarily developed by universities and the latter as a commercial product by AT&T. Most commercial forms of unix are System V based with the notable exception of Apple OSX which is BSD based. The freely available unix operating systems: Darwin, FreeBSD, OpenBSD, NetBSD are evolutions of the academic BSD unix. Linux is something like a copy of System V but it does not really attempt to be the same.

> what is better?

None of them. However, one may be more appropriate to your needs if you define what your needs are.