Management of the Linux operating system (concept of operating system) one

in the introduction Linux Management Before I ask you a question, what is the operating system? in fact, many people are not able to say, the operating system can also be said to be a software, it is running on the computer hardware software, this software and common applications and game software is very different, the operating system is the application and hardware interface software, Ordinary software can not directly call the hardware device, they must be coordinated by the operating system to achieve common software and hardware devices logical connection. The operating system can also be said to be an interface between the user and the computer hardware software, users if they want to operate the computer hardware must be implemented through the operating system. Of course there are some software is more special , for example, Oracle software It can directly write data without any media to the hardware storage device, but we rarely understand Oracle software, in fact, he is an operating system, if you want to know to find the relevant information.

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Next I will introduce several common operating system several operating systems, the first kindUNIX, say.UnixThe origins of the company are also more dramatic, and in the Bell Labs of the American Telephone and Telegraph Corporation, there was a man named Ken·Thomson's man, he likes to play a game called"Interstellar Travel"game that happens in the little corner of the lab there's aDEC PDP-7of small computers, this game requires multiple users to log in simultaneously, thisPDP-7system happens to only support single-user login. At the time, a multi-user operating system was rare and expensive, and these operating systems must also be installed on a specific model of the computer to be used. So Ken Thomsonthinking about writing such an operating system, it took him one months toUnixthe prototype was written out and installed on the computer, ran up the game found quite smoothand stable, after a period of time he applied to the leader of a different type of computer, theUnixthey decided to find a way to do it when they were running very smoothly. to the1972years of his colleaguesDennis Ritchie founded theClanguage, the two of them worked together to re-write the system again, greatly enhancing the portability of the operating system, development is also rapid

The second kind isWindowsspeaking ofWindowsI have to say that Microsoft Corp.,1975Microsoft Company established1979At the beginning of January, Microsoft moved from Mexico State to Washington, D.C., to1981years to be formally established listing. to the theyears8Mid-monthIBMthe introduction of Microsoft-included -bitMS-DOS 1.0pc, pre -MS-DOSThe system consists of aMBRof theBOOTBoot program and three file modules, these three modules are input and output modules (I/O. SYS) file Management module. In addition to Microsoft's retailMS-DOSA number of standard external programs (external commands) were added to the system package to build a relatively complete human-computer interaction environment in the disk operating system era with internal commands. -years withWindows 1.0Release of the release of Microsoft's Road to the desktop concept, the trend of development is also not a small glimpse.

The Third Kind isMac-osas Steve Jobs created the Apple  , Apple has developed extremely rapidly in order to adapt to market demand. Mac-osIt 's apple.1984year released a product, once born has a graphical interface, including desktop, windows, icons, cursors, menus and sliding bar. Mac-osit means running on an AppleMACINTOSHthe operating system on a series of computers has long been seen as an industry used by MicrosoftWindowsto compare with each other,Mac-osis the first successful graphical user interface in the business world,Mac-oswhen the graphical interface was introduced, Microsoft remainedDOSyears.

The fourth type isLinux, his predecessor was in factUnix, earlyUnixof the source code, and so on are unrestricted distribution to everyone, so that many people can seeUnixThe underlying code of the operating system, at that time caused a uproar, dueUnixsome of the coups with1979yearsUnix 7.0after the Advent,ATT (American telephone and Telegraph Corp.)The release indicates that the source code is no longer available and that the use of some universities and research institutions is prohibited, andUnixthe operating system requires a considerable amount of money to be used. WasUnixAre usually professors of scientific institutions and universities,Unixsplitting out a lot of versions, and I'm not going to illustrate that. Then andLinuxWhat's the matter with it? 1987a paragraph of the year namedMinixoperating system release it was developed by a university professor in Amsterdam, the Netherlands, and the professor calledEdwa Tannebaum, he made a smallUinuxname this operating system for meaning. MinixThe operating system was published to the Internet by professors, but he also used the codeCthe language was written over and released at the same time. This allows some people to see the operating system source code has a better understanding of the code is always guarded. A lot of people saw this.MinixI hope the professor can expand and letMinixmore perfect, but he refused because the reason for the system was that he wanted to have the students finish the lesson within a semester ..four years later, a college student named Reinasse Tovaz, his grandfather bought him a station.PC, because love computer, love to study, bought computer he did not likeMS-DOSoperating system, he downloaded theMinixthe system was installed in its ownPC, he was very fond of it and he had an idea to write a similar operating system, precisely because the idea arrived1991years.Liunxthe kernel was born.

when it comes to operating systems, the first thing we think about Windows , in fact, the world's operating system and more than this one, said so much about the operating system is actually want for the late Linux the management of the operating system lay a good foundation.

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