Linux Basics 99 Ask (1)

xiaoxiao2021-03-06  45

1. What is Linux? Linux is a strange operating system born in the network and growing in the network and matures the network. In 1991, Finnish college students Linus Torvalds germinted the idea of ​​developing a free UNIX operating system. In the past, Linux was born. In order not to let this wings unfertile operating system died, Linus will release the work Linux through the Internet. From this large number of well-known, unknown computer hackers, programmers join the development process, Linux gradually grow. The Linux first is required to require all the source code must be disclosed, and anyone must not be profitable from the Linux trading. However, this pure free software is ideal for Linux's popularity and development, so Linux starts to turn to GPL, becoming a major member in GNU camp. Now, Linux has gradually expanded from the internationally renowned enterprises such as IBM, Intel, CA, CA, Core, Oracle, and IBM, Intel, Ca, Core, Oracle, and gradually become one of the mainstream system. 2. What is free software? Since 1984, the Massachusetts Institute of Technology began supporting the "World's last hackers" Richard Stallman launched a free software movement in the software development group, and the free software foundation FSF, GPL protocol, and GNU project were born, opened free software. The chapter of the revolution. GPL, General Public License Agreement, which is opposite to traditional business software license agreement, so it is called Copyleft. GPL ensures that anyone has the freedom of sharing and modifying free software. Anyone has the right to obtain, modify, and re-release the source code of the free software, and specify that the source code of free software can be obtained without increasing additional fees. At the same time, the derivative of free software must be a license agreement with GPL as it re-issued. The GNU project's goal is to establish freely published, portable UNIX classes. 3. What is the advantage of Linux? 1) Provide advanced network support: built-in TCP / IP protocol; 2) Multi-tasking, multi-user system; 3) and UNIX systems are compatible with IEEE POSIX standards; 4) Core energy simulation FPU; 5) Support dozens of file system formats; 6) Fully run in the protection mode, fully utilize CPU performance; 7) Open source code, users can improve their system; 8) Adopt advanced memory management mechanisms, more Effectively use physical memory; 4. Do I need to learn Linux? Computer beginners: I strongly recommend that you stay away from the configuration, the management is quite cumbersome, to hug Windows, easy-to-understand graphical interface; text handler: WINDOWS has been developed for many years, has developed a set of "what you came to work" Handling software, can't commit crimes with the white words of the black, programming enthusiasts: Linux source code is fully open, is the gospel of program enthusiasts. Analyze the core, isn't it your wish? How, try it! Network administrator: Hug Linux. According to the authority evaluation, Linux is 1.8 times the network service efficiency on the machine, and it is still free, the boss will laugh.

In short, if you have one of the following conditions, embrace Linux: 1) Love the programming, always like to solve the problem; 2) Has strong research spirit, like to ask the problem, the network server Interested person; 4) Your PC old hair, running Windows like snail; 5) want to learn, learn from the UNIX system; 6) Extremely disgusted Windows blue screen crash; 7) Do not want to spend money, want to use genuine software . 5.Linux will replace Windows 9X? Computers can be divided into desktop applications (workstation / clients) and server applications, desktop applications directly for customers, implement some personalized work; server applications are some background processing systems to implement some common service work. For desktop applications, ease of use is very important, and for servers, performance is reliable and stable is more important. So the performance of the server is reliable, the stable UNIX system and the user interface for the desktop system design have always been a long-term coexist mainstream system. The Linux system is a clan Unix as a system, and its design is much more considered for stability. It is not a desktop system, which is not to replace the desktop system. So Linux will not replace Windows 9x. 6. Who is better for Linux and Windows? The WindowsNT system is Microsoft to enter the server's tools. When designing the system, the advantages of the Windows 9X's graphical interface are integrated, making it easy to use, and the market share is also So the rising section. However, the cost of the graphical interface reduces the efficiency of the system, so it is suitable for small and medium-sized enterprises, personal users, and uses unstrue performance requirements. Linux applies to emphasis on performance indicators, applications that require small user interface requirements. 7. LINUX is different from UNIX? Linux is also a member of UNIX family. It has many features that are the same as Unix, and the biggest difference between them is that the following two points: 1) Most of the UNIX system is supported with hardware, while Linux can run in a variety of hardware On the platform; 2) UNIX is commercial software, while Linux is free software, free, free, disclosed source code. 8. What are the fields can I apply? 1) Educational field: design advanced, open source code This two major characteristics make Linux a living textbook for system lessons; 2) Network server field: stable, strong, system requirements low, network function has made Linux a now Internet server The premiere of the system has now reached a 25% share; 3) Enterprise intranet: You can use a low-cost input e-mail server, WWW server, proxy server, transparent gateway, router; 4) video production field: famous " Titanic "is the special skill effect of 200 Linux collaboration. 9.Linux makes system development status and future? At the 2000 Linuxworld Conference, it is clear that the social distribution of the free release system has greatly enhanced, especially many hardware vendors, such as IBM, HP and Dell added to the Linux field, which greatly promoted This development of the system.

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