Linux small Knowledge translation-"unix" and "Unix-compatible os"

Often people ask what is the difference between "linux and UNIX? ","linux is UNIX? 」。

The answer is generally "linux is a Unix-like development of Os","linux and Unix similar but not a os".

There are some stories about "linux and unix".

First, "unix" is the OS developed by Bell Labs in the US at T & T in about 1970 years and will be developed in advance.

Now, "unix" This trademark is owned by the Open group, so it can be said that "linux is not unix".

On the other hand, there is a "linux is not unix" reason. In 1991, the Finnish Linus Torvalds, a student at that time, wanted to realize the functionality of the expensive UNIX at the time, and since 0, Linux has been developed.

In other words, Linux was developed without any of its ancestral "unix" code. In short, from a procedural point of view, it is completely another thing.

However, unlike the "unix" function, the operating mechanism is similar, so it is called "Unix-compatible os". "

For more information on UNIX and what to register as a UNIX product, please refer to the following URL:

http://www.unix.org/

http://www.opengroup.org/openbrand/register/