Notes on 2019.11.8Linux lesson

Linux features

1. Completely free

2. Efficient security and stability

3. Support for multiple hardware platforms

4. The user-friendly interface

5. The power of the network

6. Support multi-tasking multi-user

Linux kernel

The kernel is the heart of the system, run the program and the core management program disks and printers and other hardware devices. Do gymnastics environment provides a user interface that accepts commands from the user, and the command to the kernel to execute.

Linux kernel source code written in C major, only a portion associated with the drive assembly written in assembly language

command interpreter layer

shell is the system's user interface, a user interaction with the kernel operations, an interface, a user input which access command and put it into the kernel to execute.

The presence of several Linux operating environments are the desktop window manager, command-line shell

shell not only is an interactive command interpreter and a programming language

utility

Editor

filter

interactive program

version of Linux

kernel version

release

preparation and set up a Linux server

you want to successfully install Linux, it must be fully prepared basic hardware requirements, hardware compatibility, multiple conductivity, disk partitions and installation methods.

Everything Linux system file system kernel Device Manager will automatically name the hardware specification it aims to allow users to guess roughly property and equipment, such as partition information by writing the name of the device

 installation configuration virtual machine

1. Open the virtual machine

2. Click Create a new virtual machine option in the pop-up New Virtual Machine wizard screen, select Typical radio button, then click the Next button.

3. Select the radio button to install the operating system later, click the Next button.

4. Select the client type of operating system for Linux. Version red hat enterprise Linux7 64 Wei then click the Next button.

After 5. Enter the virtual machine name, and select the installation location click the Next button.

6. The maximum virtual disk size of a system is set to 40gb. Then click the Next button.

7. Click Custom hardware buttons.

8. The recommended dosage of the virtual machine system memory may be set to 2GB. Minimum not less than 1gb. The number of properties of the host CPU is provided for each processor and processor cores, and open virtualization function.

9. At this time, the drive apparatus should be selected iOS image file downloading system using a good red hat image file.

10 network connection mode selection only host mode