Linux operations Second lesson----Linux history, environment preparation

first, the development of Linux

1.1969 years of birth at Bell Labs Unix, is open source free, and then gradually transformed into a toll system.

In 2.1986, Tan Ning developed mini Unix, but it was mainly used for teaching.

3. Stallman Create FSF(Free Software Foundation)

Project:GNU Geno Program

4.GPL: FSF formulates general Public License

Open source Free spread

Any modification must be open source after modification.

Ii. differences between different distributions of Linux

1. Ubuntu Tuban diagram is primarily used by developers

2. RedHat Red Hat charging system, state-owned enterprises, finance and other wealthy use

3. The most popular CentOS domestic, after our learning environment system, was Redhat acquired

4. Red Flag Linux, the successful bidder is a system developed in China

Third, learn the necessary configuration:

1. i5 processor, 8G running memory, 500G HDD (256 solid state)

2. Vmwera CentOS-6.9 Xshell

3. : Mirrors.aliyun.con (Latest Version)

   vault.centos.org (old version)

4. Computer 32-bit vs. 64-bit differences:

   1). Operating speed 32 bits equivalent to 4 lanes, 64 bits equivalent to 8 lanes

   
   

   2). Addressing range (maximum supported memory) 32-bit maximum support 4g,64 bit support for larger memory

   3). Design positioning 64-bit mainly for the server use for a large number of calculations

5. Open and then choose 6.9dvd1 .

Centos-6.9-x86_64-livedvd.iso

Centos-6.9-x86_64-livedvd.torrent

centos-6.9-x86_64-bin-dvd1.iso√√√√√√

Centos-6.9-x86_64-bin-dvd1to2.torrent

Centos-6.9-x86_64-bin-dvd2.iso

Centos-6.9-x86_64-minimal.iso

Centos-6.9-x86_64-minimal.torrent

Centos-6.9-x86_64-netinstall.iso

Centos-6.9-x86_64-netinstall.torrent

IV. Create a virtual machine (not completed, post-fill, the following steps)

1. Create a virtual machine

2. Installation of CentOS (NEXT==F12 during installation)

   Disk Partitioning:

   / boot(boot partition, does not need to be too large) 200M

   swap(when memory is low, can be temporarily used as memory) when the memory <8g, is 1.5 times times the memory, when the memory ==8g, swap==8g

   / (root directory, where all program software is stored) how much is left?

3. Login user name Input root, enter the Super User interface (marked #), enter the other user interface (lower permissions, generally can only view can not be modified, marked as $).

   
   

Linux Operations Second lesson----Linux history, environment preparation