# This article has participated in the activity of “Newcomer Creation Ceremony” to start the road of gold digging creation together

Classification of software

Application software

  • To implement some business function
  • Application software should be based on corresponding system software
    • Different systems need different software

The system software

  • To work with hardware
  • Masking the differences between software and hardware

Classification of system software

  • Computer system software

    • windows
      • The largest number of users in the world
      • Charge, not open source
      • All kinds of software are relatively complete
    • mac
      • Only apples
      • iosThe unique
    • GUN/Linux
      • GUN is an open source software organization and all software in the world should be open source
      • Gnu is not Unix
      • GCC++
      • Torvalds Linus –Linux

  • Mobile phone system software

    • ios
      • Apple’s own system software
    • The android
      • Most of the world’s mobile phones are based on this system
      • The market is larger
    • symbian
      • Nokia used it

    Linux System Branches

  • RedHat (for a fee)

    • CentOS(Server)

      • Completely open source and free

      • Do not use the latest version of CentOS

    • Mainly used for the server version

  • Debain (free)

    • Ubuntu(Window interface)
      • Windows good Linux system
      • Some major software supports itUbuntusystem

Linux download

  • website
    • linux.org/
  • The download page
    • Linux.org/pages/downl…
  • CentOS7.6Download address
    • vault.centos.org/7.6.1810/

DVD

  • Normal functions are included

Everthing

  • All features are included

Minimal

  • All the basic functions are included

iso

  • Normal installation

torrent

  • Install as seeds

Vm installation and configuration

Virtualization technology

  • Idle computer resources can be better utilized

  • We can create multiple virtual computers in the computer to help us perform tasks

  • The theoretical composition of virtual machines is actually the same as that of real computers

  • Install vm software

    • virtualbox
    • virtualmachine

  • Here are a few online activation codes for reference:

    • Activation code of 16:1. zF3r0-FHED2-M80TY-8qYGC-nPkyf

      ​ 2. YF390-0HF8P-M81RQ-2DXQE-M2UT6

      ​ 3. ZF71R-DMX85-08DQY-8YMNC-PPHV8

    • Activation code of 15:1. Yg5h2-anz0h-m8ery -TXZZZ-YKRV8

      ​ 2. UG5J2-0ME12-M89WY-NPWXX-WQH88

      ​ 3. UA5DR-2ZD4H-089FY-6YQ5T-YPRX6

      ​ 4. GA590-86Y05-4806Y-X4PEE-ZV8E0

      ​ 5. YA18K-0WY8P-H85DY-L4NZG-X7RAD

      ​ 6. ZF582-0NW5N-H8D2P-0XZEE-Z22VA

Creating a VM

  1. Change the default vm location

    Edit –> Preferences –> Change the default location

  2. Return to the home page and click Create VM

  3. Enter the following interface

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Note: It is recommended to choose a custom installation and proceed with the following steps

  1. Select vm hardware compatibility

Note: Here we select Workstation 15.x

  1. Next comes the option to install the operating system

Note: select the third option here and we take separate installation here

  1. Select the installation system type

We have chosen a centos 7 64-bit system for Linux

  1. Enter the name of the VM

You can name it according to your personal preference

Here individual recommends the computer of general performance or darling point next step, do not make demon

  1. Allocate memory for the VM

Note: 1g is generally recommended, but I have 16GB of ram, so I chose 2G

  1. Selecting a Network Type

Look up the pros and cons of the bridge model and NAT

  1. The next step can be directly brainless, let later to the disk size allocation

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Select the first option shown here

  1. Specifies the disk capacity

Note: here must not be brainless 20G, certainly not enough, at least to a 64G

  1. The next step is to specify the location of the virtual disk

This is generally the address of the line, depending on personal habits

  1. The next step is complete

Installing the OS

  1. First find the CD/DVD(IDE) option in the configured virtual machine, as shown below

Check the use ISO image file and let browse to open your system installation file

  1. Starting a VM

Select the first Install CenrOS. 7 Press Enter

  1. Select the language

Note: To prevent garbled characters, choose English as much as possible

  1. Enter the following page

Here the date can be set, also can not set, how to set, click the map directly, it will default Shanghai, after making a slight adjustment

  • Must do here hard drive allocation

    When making manual allocation, remember:

directory Distribution of size
/boot 256m
/swpa Twice as much memory
/ Remaining space
  • Hostname change: It is best to change the name of your virtual machine

  1. Click start installation and set the password

    ​

  2. Wait until the installation is complete and restart (reboot)

  3. After the restart, normal input user name and password can be used

    User name: root (default)

    Password: just set their own