Who knows which company developed the Linux system

Linux is an operating system, just like Windows. It doesn't belong to any company, it's completely open. Earliest by Linus

Torvalds wrote the kernel, and many good programmers worked on it. The different versions seen now are just different haircuts.

It's just a line version.,The more famous ones are Redhat.,SUSE,Debian, etc.,As long as it's the Linux kernel.,Drivers.,Application software.。

Packages are issued, in essence, they can get the source for free.

Extended information: The birth, development and growth of the Linux operating system has always relied on five important pillars: UNIX operating system and minix operating system.

system, the GNU program, the POSIX standard, and the Internet network.

In the 80s of the 20th century, the performance of computer hardware continued to improve, and the market for PCs continued to expand.

There are mainly UNIX, DOS, and macOS. UNIX** is expensive and does not run on PC; DOS appears rudimentary and originated.

The code is strictly confidential by the software manufacturer;

macOS is an operating system that is specifically used in Apple computers. At this time, the field of computer science is in urgent need of a more perfect,

Powerful, inexpensive and completely open operating system. Since there were very few typical operating systems for teaching, it was taught in the Netherlands at the time.

The Americans wrote an operating system called minix, in order to teach students about the operating system.

How it works on the inside. Minix, while good, is just a simple operating system for teaching purposes, not a powerful one.

The biggest benefit of the utility operating system, however, is that it is open source**. Computer science students all over the world are studying minix sources.

**To find out which minix operating system runs on a computer, Linustorvalds, a second-year university student at the University of Helsinki in Finland.

On the basis of absorbing the essence of Minix, Linus wrote his own Linux operating system in 1991, which is the symbol of the beginning of the Linux era. He used the core of UNIX to remove the complicated core program and rewrite it.

The x86 system suitable for general computers is virtually balanced, and put on the network for everyone to be briefed**, in 1994 launched a complete core, so far, Linux has gradually become a complete and stable operating system, and is widely used.

Linux vendors include PwC, XTEAM Linux, SUSE, Debian, and Hongqi Linux.

1. Zhongzen beacon PwC.

PwC Office is an office software product developed by Winning Bid Software that can run on both Windows and Linux platforms, covering the common functions of Microsoft products.

Windows and Linux platforms to meet the needs of daily office.

Windows and Linux platforms are comprehensive, secure, reliable, convenient and easy to use, stable performance, and excellent compatibility.

There are three versions for Windows and Linux platforms: Normal, Educational, and Tibetan.

2. Hongqi Linux

Hongqi Linux is a series of Linux distributions developed by Beijing Zhongke Hongqi Software Technology, including desktop version, workstation version, data center server version, HA cluster version and Hongqi embedded Linux and other products.

Hongqi Linux is one of the largest and more mature Linux distributions in China.

3. Debian

Debian in a broad sense refers to a cooperative organization and its work dedicated to the creation of a free operating system, since the Linux macro kernel is the dominant kernel among the many kernel branches of the Debian project.

Most of the basic tools of the operating system created by Debian developers come from GNU projects, so "Debian" is often referred to as Debian GNU Linux.

4. SUSE (Linux operating system).

suse (pronunciation &712;su&720;s&601;) refers to SUSE Linux, a Linux distribution distributed and maintained by SUSE Linux AG in Germany, and is a registered trademark of this company.

The first version appeared in early 1994. In 2004, the company was acquired by Novell.

5. XTEAM Linux

XTEAM Linux is a domestic Linux operating system launched by Surfplatform Software Group in 2000.

Now the cost of Linux training courses on the market is about the same, there is not much difference, and the learning cycle is about the same, it is impossible to judge the quality of the institution in this regard; Although the fees are the same, there are differences in the course arrangement, course content, and teaching quality of different institutions, and you need to decide according to your actual situation.

If you want to pick a few Linux learning institutions that choose the best teaching, you can consider the following points in combination:

1. How to arrange the curriculum system and whether there are practical projects.

2. How are the teachers, whether they have rich teaching experience, and whether they have experience.

3. How is the teaching environment and teaching equipment?

4. The employment rate of previous students, the reputation of students, and the development of the institution are comprehensively seen.

If you want to learn Linux technology, you don't know where to go, you can come to Old Boy Education. The school began to do Linux training at the end of 2008, is the earliest institution to open Linux in China, more than ten years of accumulation, rich teaching experience, strong teachers, old boy education on the basis of more than ten years of teaching to sum up experience, published a number of Linux learning books, to help the majority of friends who want to learn Linux to get started quickly. In terms of teaching mode, it also has its own unique set of systems, which are divided into full-time classes and advanced classes, and are targeted for the knowledge level of different students.

And the mode of strict teaching is adopted, so that students who have no self-control can passively accept knowledge, and they can graduate from the university. With the high-quality teaching, the old boy has won the recognition of the college, and the old students have referred up to 80% of the new students.

There are really too many Linux operating system development institutions on the market now, and they are uneven, some are really good, and some are very poor, so we need to keep our eyes open when choosing.

Specifically, I think I can give you these suggestions as a reference:

1. See whether the faculty of the institution is strong. As the saying goes, a famous teacher makes a good apprentice, so the ability of a teacher largely determines what you can learn. Only teachers who are professional enough and have rich practical experience can teach you useful knowledge.

2. See whether the institution has a complete and rigorous curriculum system. This determines whether you can learn a full range of knowledge, what kind of method you take in the classroom and whether there is one-on-one tutoring outside of class is also very important.

3. See whether the employment rate of the institution is high. The reason why we choose training institutions is for employment in the final analysis. Therefore, the employment rate is the key to choosing a training institution.

4. See whether the tuition fee of the institution is reasonable. The tuition fee under the current ** is generally 8k-2w, and the online is about 5k-1w. It is necessary to carefully look at the tuition fees of training institutions, whether there are key failures and arbitrary charges.

5. See whether the computer equipment of the institution is complete. This draft is the point that offline training institutions need to pay attention to, if any offline training institution says to bring its own computer, then it is better to run quickly, the remaining offline training institutions do not even provide computers, so much tuition fees to **. Online training institutions don't need to think about this, and they all bring their own computers online.

This is one of the reasons why online tuition is cheaper than offline, minus the cost of computer facilities.

The above points are to be considered, each point can not be ignored, do not be too troublesome, this is related to their own vital interests.

Hope it helps.

In addition, I think we must search for students' evaluations of him on the Internet, and then go to the official website to learn about its comprehensive situation, and then go to station b to search for some of its free courses, listen to it yourself, see if you can understand it, see if the teacher's teaching style and level are professional, and then decide whether to report.

In addition, if you are not particularly anxious when you sign up, you can report when they do node activities, such as 618, Double Eleven, and Anniversary Celebration, all of which are times when the activity is relatively strong, of course, other nodes can also be seen, and maybe there are times when the intensity is relatively large.

As far as the current market is concerned, the charging standards of Linux operation and maintenance training courses are about the same, there is not much difference, specifically, it depends on which institution to choose, although the fees are the same, but the course arrangements and teaching quality of different institutions are still different, you need to decide according to your own situation, in fact, if you want to learn practical skills through training institutions: the factors that need to be considered are: 1, teachers.

2. Curriculum system (guided by the actual station of the enterprise). 3. Teaching quality. 4. Institutional reputation.

5, the city (first-tier cities, Beijing is the most cutting-edge IT technology and the city with the most industry chaos) to avoid greedy for cheap, casually choose an institution, and finally lead to cutting-edge technology and uproar to change the actual technology do not understand anything, spent money and wasted time to regret, according to the above to find an institution, if you still don't know how to start, just take a look, old boy linux, the last few books about linux, 1. Learn Linux from an old boy (popular with college and Linux enthusiasts). 2. Linux should be learned like this. Hope it helps.

Open source: Linux is an open-source operating system, which means that its source** is public and can be viewed, modified, or distributed by anyone. This allows it to be customized to the specific needs of the company.

Security: Linux's design patterns make it excellent when it comes to security. Users need permission to perform specific tasks, which is effective against malware and viruses.

In addition, the open-source nature of Linux means that it has a large number of users and developers who are constantly looking for and fixing possible security vulnerabilities.

Stability: Linux systems are very stable for long runtimes, which is especially important for server environments. Unless there is a hardware failure or a power failure, the Linux system can continue to run without rebooting.

Cost-effective: Linux is more economical compared to commercial operating systems. Many versions of Linux are completely free, which can dramatically reduce IT costs for businesses.

Hardware compatibility: Linux can run on a variety of hardware platforms, including common PCs, servers, supercomputers, mobile devices, embedded devices, and more.

Powerful command line: Linux's command-line interface is very powerful, which allows system administrators to complete tasks quickly and precisely from the command line.

Support for a variety of applications: There are a large number of open and commercial software that support Linux, including various development tools, databases, web servers, etc.

Community support: Due to the open source nature of Linux, it has only an active development and support community. If you run into problems or need new features, you can often get help from the community.

For these reasons, many companies, especially technology-based companies, choose to use Linux as the operating system for their servers or development environments.

The security of this system is good, because the pin slip is complex to use, and the difficulty of renting a bucket is high, so there are very few viruses that can be attacked.

Linux is a UNIX-like operating system kernel written by Linus, and then combined with various open source software organized by GNU, it forms an operating system that many people around the world participate in writing!! It feels cool to think about.

Linux evolved from UNIX, and in the earliest past, the core of UNIX was public (I think so), so there were many later versions of UNIX (IBM AIX, FreeDBS, HP-UNIX, SCO UNIX, etc.).

Therefore, there are also many versions of Linux (from different companies).

redhat、suse。。。

The Linux operating system is a clone system developed based on the UNIX operating system, which was born on October 5, 1991 [Linux desktop] (this is the time when it was officially announced to the public for the first time). Later, with the help of the Internet network and through the joint efforts of computer enthusiasts all over the world, it has become one of the most used UNIX operating systems in the world today, and the number of users is still growing rapidly. For a detailed introduction to linux, please refer to the book "Linux Should Be Learned".