is linux a unix ???

I always though that UNIX was JUST and ONLY, and operating system.
Now I try to download UNIX from internet, but the webs always gives me MACHINTOSH, LINUX; AIX, BSD for download.

so .. the word UNIX, is just an operating system, or is a KIND of operating system. or it became a kind of operating system with the time.

I want to download UNIX, to try, i cannot find it anywhere to compare the performance with linux

LINUX is a kernel ..

see this LQ article Unix vs Linux

Hi.

The article at http://en.wikipedia.org/wiki/Unix will provide most of the answers to your questions. If you click on the first graphic, you'll see the *nix-like systems that you can obtain for free. Others are proprietary, e.g, AIX, HPUX, and are built to run on specific hardware ... cheers, makyo

Hi,

I suggest that you read the below links;

UNIX
UNIX-like
Linux

You should be able define what you can or cannot do after reading the above links. If you want 'UNIX' then pay the $$. If you want a 'UNIX-Like' then choose one. The same goes for a GNU/Linux distribution, choose one that meets your requirements.

Solaris is unix-based , while BSDs and Linux are unix-like.

GNU project was made to overcome the propritary nature of UNIX(IBM-AIX,HP-UX,SUN-SOLARIS,BSD).

GNU/LINUX is the complete open source operating system.

GNU - GNU is NOT UNIX

As UNIX is proprietary u can't download it anywhere.Use GNU/LINUX instead.

U can download Solaris ,as sun made it opensource in 2008.Now its opensolaris.
U also can download FreeBSD.

fachamix,

Your thought was correct: it was and it is an operating system consisting its own kernel and environment, which were unfortunately proprietary: not open not free, until recently.
Here is an OpenSolaris by Sun, it is a unix.
Here is a FreeBSD of the Berkeley unix, that is also free, as well as the OpenBSD here.

Performance wise, if you mean speed, a properly configured unix is better than an Ubuntu or "whatever an all-ready-all-around" distro. But a well trimmed GNU/Linux is as fast as a well trimmed unix. The nearest GNU/Linux distro to immitate a BSD unix implementation is Slackware.

Linux kernel today stands as a well coded matured kernel, thanks to Linux Trovalds and the many bright boys who spend time and talent to offer a "no joke" kernel to the world for free! Linux is a Unix-Like kernel, it is coded separate but inherited and improved the very strong philosophical points of Unix, such that it is as good as unix itself now.

We apply the term "GNU/Linux" for it is the truth. Linux is just the Kernel, but GNU provides the rest that makes it an Operating System. We acknowledge honor to whom honor is due.

Read the links Onebuck has provided above, it will shed more light to your questioning.

Hope this helps.

Good luck.

thanks all for the reply!!!!

thanks really

Actually it is not. Several sources clearly mark that (especially today) there is no operating system called "unix" (in caps or not). The word does not mean a computer operating system, but standards that describe or even define such a thing. Wikipedia says it like this (direct quote from the page about Unix):

So, in a way, Linux (meaning the operating system, which some folks argue should be written as GNU/Linux) is a Unix operating system ("-like" if you like). But in any case, there is no operating system that "is" Unix.

As a sidenote, if you want some fun, go to a library and read some books from the early days of Unix. Then see some books from the time when Windows came around that talk about Unix. Enjoy

I think I'd sort of like to disagree with this post - Linus Torvalds was reading the book "The Design of the Unix Operating System" when he started to develop what would become Linux, so I'd say Linux IS a Unix.

But I have never actually used a Unix system besides Linux, so I can't tell you what, if any, the differences are.

In the movie documentary "Linux Code". It was mentioned that Linus Torvalds started his kernel project on a Minux system. The documentary linux Code can be found in youtube.com.

http://www.youtube.com/watch?v=P7ycppO3gPE

The movie is split in 7 parts.

BTW, it does not matter to me if linux is unix-based or unix-like, as long it is not windows.

- Cheers

So you mean if you see something, get inspired by it, and create something it becomes a replica of what you saw? So Linux is actually a plagiarized unix? I don't understand this logic.

Also check these links: http://linux.wikia.com/wiki/Linus_To...nux_connection
http://en.wikipedia.org/wiki/History_of_Linux
Btw, minix was an "unix-like" system and not unix.

Regards

What makes you say that BSD's aren't Unix-based? They are descendants of original AT&T UNIX. Solaris has paid for its use of UNIX trademark so it can be called UNIX system, BSD's are UNIX-based as is Solaris and Linux is the newbie of the growd being UNIX-like.

No---Linux is a Unix CLONE. Keep in mind that--when Linux started--all of Unix was closed and proprietary. Concurrently, the Gnu project was building clones of all the standard Unix utilities. It took Torvalds' kernel AND the Gnu utilities to make Linux (or--more correctly--Gnu Linux).


and of course remember what GNU stands for.......

b0uncer, if Unix is not an operating system then this is the first time I hear that. The world knows it was. Well anyway, flashy definitions come from anywhere: it depends on how you define the word. If unix is nothing but philosophy then it would be wise for anyone to turn to philosophers to define what unix is: I remain here in the LQ and be satisfied with how books describe this well implemented kernel.

dv502, you don't need to go youtube, you can read linux source code at /usr/src/linux/kernel in your box

And btw, resetreset, I have run a solaris and the difference with GNU/Linux/Slackware is both few and many! :-) depending on what you look for.

Good luck.