If you are reading this then you are probably don't know what unix is so I will tell you in this blog post. The unix operating system is made up of a few part. There are three-part the kernel, the shell, and tools and app. The UNIX operating system is a very old and very power full under the hood OS. Now when I say under the hood I'm talking about something that you don't see, unless you want to see in then could very well assess it, but it run mostly every sort of like an engine in the car under the hood. And when I say very old I mean about a decade or two ago.



I will start off in the paragraph talking to you about the kernel. Now if you're familiar with the operating system linux then you probably know what the kernel but the linux kernel is more like the UNIX operating system then a kernel. The kernel in an operating system is the code, if you called, that is the baseline of the rest of the operating system and if you were to change the kernel then you might severely screw up your computer and/or OS. The UNIX kernel is a very special kernel of the powerless some like the Macintosh operating system and the UNIX OS is surprisingly very similar to the linux kernel. I admit that I have not memorized or closely look at the center part of the UNIX operating system, when I say center I am talking about the three layers of the UNIX operating system which are three components, the kernel, the shell, tools and apps.

The shell is my part of UNIX because this is the part that humans interact with and you can mess around with without hurting your computer but at the same time changing. And when I use the word changing I am talking about searching for files, writing a program, and much more. All the commands that I teaching you are used in the Shell. An easy way to deifie the shell is to say it is where the computer shows information and the human wielding the computer puts an information. The shall is where you will mostly spend your time when solely dealing with the UNIX OS.

Tools and Apps are basically what they sound like tools and apps. But you really get down to it then can realize that when you're running an OS on it like Mac OS X then that operating system become an app. So you talk about it you might be thinking that is just an application or a tool like flink would really it is a  operating system. This is why I think the tools and applications part is so interesting.

To conclude this blog out like to say that UNIX operating system is so amazing because that each layer is so just amazing like, the kernel, the shell, tool and application. Because the kernel can do so much just a bunch of code, if you so call it that, that can do so much of. Because the shell is a way to access the operating system. But the applications can be an operating system of their own. I hope this with every helpful please leave a comment below.

History Of Unix

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Where did UNIX come from and why are there different versions of UNIX?

The first efforts at developing a multi-user, multi-tasking operating system were begun in the 1960's in a development projectcalled MULTICS. While working for Bell Telephone Laboratories in 1969 and 1970, Ken Thompson and Dennis Ritchiebegan to develop their own single-user, multi-tasking small operating system and they chose the name UNIX. Their initial goal was simply to operate their DEC PDP machines more effectively. In 1971, UNIX became multi-user and multi-tasking, but it was still just being developed by a small group of programmers who were trying to take advantage of the machines they had at hand. (In other words, this operating system that they were developing did not run on any machine made by Bell!)

n 1973, Dennis Ritchie rewrote the UNIX operating system in C (a language he had developed.) And in 1975, the portability of the C programming language was used to "port" UNIX to a wide variety of hardware platforms. For legal reasons, Bell Labs was not able to market UNIX in the 1970's, though they did share this operating system with many universities - most notably UC-Berkeley. This led to some of the variations in UNIX which we see today. After the divestiture of the Bell System,

their parent company, AT&T, became much more interested in marketing a commercial version of UNIX. And today we see that many companies have now licensed their own version:

AT&T's System V,

Versions of System V such as SCO's Xenix and IBM's AIX

Berkeley's UNIX (called "BSD" for "Berkeley System Development"),

Versions of Berkeley UNIX such as Sun Microsystem's SunOS, DEC's Ultrix and Carnegie Mellon University's Mach (used on the NEXT).



Thanks For Reading.