The birth of the learning note-linux of Linux

2. What is LINUX?

   Linux is a set of open source and freely propagated classes UNIX operating system software .

3. The birth of Linux

   (1), 1984 years,ANDRW S.tanenbaum developed a Unix system for teaching , called MINIX;

   (2),1989 years,andrw S.tanenbaum will minux the system running the domain X86 PC computer platform;

   (3),1990 years,Linus Torvalds First Contact with MINIX system;

   (4),1991 years ,Linus Torvalds(MOP) began in MINIX To write various drivers and other operating system kernel components;

   (5),1991 end,Linus Torvalds Open the Linux kernel source code 0.02 version (http/ www.kernel.org)

   Note: It is only Linux kernel kernel part of the code

   (6), 1993 , Linux1.0 release, Linux tothe GPL Copyright Agreement;

   (7),1994 Year, the first commercial release of Linux Slackware ;

   (8),1996 Year, the U.S. National Standards and Technology Bureau of the computer system laboratory confirmed that the Linux version 1.2.13(packaged by Open Linux Company) in line with posix Standard;

   (9),1999 year, the Simplified Chinese distribution version of Linux was published;

   2000 the system matures.

5.   FSF is the abbreviation for Free Software Foundation,

7.   GNU, all known as GNU's not Unix, is also known as the Slave program and is the main project of the FSF. The GNU Unix-like operating system is a collection of software consisting of a series of application system programs, system libraries and development tools. Although GNU was eventually not popular, some of its components ran to the Linux kernel .

9. Span style= "TEXT-INDENT:28PX;" >    GPL all called general public License, Chinese name is general Public License, is a well-known open source License Agreement, open Source Society Zone's most famous linux GPL released under license. GPL The core of the license, is to ensure that anyone has the freedom to share and modify free software, and that anyone has the right to obtain, modify and republish free software, but must also give the source code for the specific changes.

10. What is CentOS?

     is aRedhatone of the branches toRed HatThe published source code is rebuilt in accordance withGPLof the license AgreementLinuxsystem, which is theRed hat LinuxRemove trademark in source codeLOGOand the non-free software section after the re-compiled version, the currentCentOShas beenRed HatCompany acquired, but open source free.

11. Hardware composition of the server

    1) power supply: Provide power to the server. Be sure to have dual power! (7x24 without downtime)

    2) Motherboard: All board cards must play a role through the motherboard, the performance and quality of the motherboard directly affect the entire system.

    3) CPU (central processing Unit): The control center responsible for the operation and control, is the most critical part of the computer. The CPU is more capable of determining the speed and efficiency of the computer than any part of the computer. Common manufacturers are Intel and AMD.

    4) CPU fan: Server cooling.

    5) BIOS chip (CMOS chip): Responsible for the motherboard power after each part self-test, all normal to start the operating system. Record the most basic information of the computer, is the software and hardware to deal with the most basic bridge.

    6) HDD: high-capacity memory. Mechanical hard disk: IDE (SCSI) <sas<sata, use the machine to drive the disk rotation. Solid State Drive: SSD, no motor motor, fast.

    7) Memory: temporary memory, only responsible for the relay in the computer data and can not be permanently saved, lost after the power outage, its capacity and processing speed directly determine how quickly the computer data transmission. (The key to optimizing your site is to use memory as much as possible.)

    
    

The birth of the learning note-linux of Linux