0.4 Why learn About Linux?

When students read this section, I believe you have been basically familiar with Mr. Liu Wei's writing characteristics (but not lecture characteristics) - can use a word to clear things, I will never make a paragraph. The benefits are obvious, first of all, the article is no longer lengthy, with a lot of pictures that look very interesting, and second, it allows you to find the most important knowledge and dry goods at a glance, so next Linux history and development, please pay attention to each point in time.

Back 20 1970s, UNIX were open source and free. 70 But 1979 AT&T announced plans to commercialize UNIX systems, the open source software industry was transformed into a copyrighted software industry, with source code treated as a trade secret and patented products, and people were no longer free to enjoy the technology.

So in 1984 Richard Stallman launched the GNU Open Source Program GNU license agreement for GPL authoring environment. 1987 GNU program achieved a major breakthrough , gcc compiler release, which allowed programmers to write their own open source software based on the compiler. T hen, in 1991 Linus Torvalds a student at the University of Helsinki in Finland, wrote Linux 10 T he system was quickly supported by the GNU program and a large number of hacker programmers GNU features based on the GNU GPL license agreement. The Linux system then entered a boom phase of development.

1994 Bob Young building on the Linux 1 integrated a wide range of source code and program software, released Red Hat and began selling technical services, further Linux systems. 1998 as GNU source program Linux systems continue to heat up, IT Intel IT IBM and Intel, have been pushing hard for open source software. B y 2017 the Linux 4.13 and there were hundreds of Linux system versions, but they still used the Linux system Linus Torvalds RedHat also become a leader in the open source Linux systems. During lectures, I often ask my classmates a question: "Why learn Linux " A lot of students say, "Because Linux source, they have to learn" to make me happy. I n fact, this idea is completely wrong! O pen source operating systems say less 100 open source software at least 100,000, why not learn one by one? So the open source features mentioned above are only part of the advantage and are not enough to be a reason to work hard.

For users, the open source spirit is only the icing on the cake, so the correct learning motivation should come from: Linux system is a UNIX interface, and UNIX can better meet the needs of the job.

Most readers should start with Windows to understand computers and networks, so there's definitely the idea that Windows works well, and it's good enough for everyday work." O bjectively speaking, Windows systems are really good, but they're not satisfactory in terms of security, high availability, and high performance. Y ou should have seen the picture below. Readers must now be able to guess why Linux systems should be used on web servers that require long-term, stable operation, cluster systems that Linux work together. The following image also shows Linux systems Windows systems.

Linux advantage readers can first understand without deep study, learning and then slowly feel.