What is the difference between unix* and gnu/linux

Therefore, it is an Open Source code and anybody can use it as per their needs. But it cannot be used as such as it requires an OS to interpret to the computer. The next component interacting directly with the Hardware is the Kernel. It forms the core component of any operating system and is responsible for delivering services to the upper layers from the lower layers.

With the Shell in place, we are not confused about the complexity associated with the kernel. Just imagine the situation where you need to give the commands in binary digits as the computer understands only that! The outermost layer is the set of utility programs and we call it as Applications as well. These programs are designed to perform certain tasks like printing, compiling, etc. It is a multitasking and multi-user operating system and was originally developed at Bell Labs by Ken Thompson and Dennis Ritchie.

Since its inception, the Unix OS is getting bettered every now and then. It takes the pride of being the model for the Linux OS and it has three main components — the Kernel, the Shell, and the programs. You can now link the Unix with Linux architecture that we have seen above and both of them share a common architecture.

As we have discussed earlier, The Kernel is the innermost component that interacts with the hardware and performs functions such as file storage, allocating memory space, time, etc. The Programs are stored as files and are denoted with the Process Identifier PID to differentiate from that of the data files. Below is the logo of the Unix and it is just a written text of the same.

He was frustrated by the closed source programs that are always copyrighted and not available for further research or use. The Unix and other Closed Code operating systems are made available commercially without letting the source code out. This was a major frustration for the Mr. Even though the GNU was up for implementation, the software needs a Kernel to interact with the hardware. So we could say that GNU by itself could not function and it needs the Kernel.

Therefore, the Kernel of Unix was imitated and the new Kernel was designed. The GNU software by itself could not run as the Kernel is missing. GNU was developed during the software movement, a collection of software that can run an operating system.

Unix, on the other hand, is considered the basic operating system that was developed a long time ago. GNU was developed as a project during the software movement. Richard Stallman began developing GNU in in a initiative.

GNU has a completely different code set that is inconsistent with Unix. It is a combination of a large amount of free software that is freely accessible to the public. Unix was introduced as an operating system in the s.

Since then it has been adopted by several companies who modified the version and started their own operating system. It is considered the father of many of these operating systems. Other features of Unix include its multitasking capabilities and multiple users can use it at the same time.

It is compiled with several free programs. It was designed with the idea that it will be available to everyone. Therefore, the source code was kept open. Inspiration came from Unix, the basic operating system. Gnu may be inspired by Unix, but its code is completely different from Unix. Add a comment. Active Oldest Votes. That is a difficult question to answer. Now for the harder questions. Improve this answer. Zaki 5 5 bronze badges. Strugee is correct. They are not fully compliant, but they are trying to be.

Not sure how to work that into the answer though. Show 4 more comments. Steve HHH 7 7 silver badges 11 11 bronze badges. The Overflow Blog. Podcast Explaining the semiconductor shortage, and how it might end.

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