<> one , Experimental purpose :

1, Familiar with virtual machine installation LINUX Operation steps of .
2, be familiar with GNOME graphical user interface , Administration GNOME window .
3, be familiar with Linux Operating system environment , master Linux General format of commands ;
4, Master some common Linux How to use the command , Master the basic operation .

<> two , Experimental environment :

One operating GNOME Any of the graphical user interfaces Linux Operating system computer .

<> three , Experiment content :

<>PART 1 Installing in a virtual machine CentOS7, except root Outdoor use , Set up two other users .

1. First enter root user ( Common user rights )

2. Add user testuser_1 and testuser_2
And give testuser_2 Set password
Then enter testuser_1
Last switch to root user
Complete installation in virtual machine CentOS7, except root Outdoor use , Set up two other users .

<>PART 2 LINUX Network link between virtual system and host

According to the textbook 31 Page to 37 Contents of the page , Complete network configuration of virtual machine and host , Required completion :

* Understand three network modes .
VMWare of Linux There are three network types to choose from : bridging (Bridge),NAT,Host-only
VMWare Two network cards will be virtualized on the host computer :VMnet1 VMnet8

Bridging mode :

* The virtual opportunity assigns an independent network segment that is the same as the physical machine IP address , All network functions are almost identical to those of real machines in the network .
* The bridge type is suitable for LAN environment , One in the network is responsible for IP Assigned routers , The virtual machine joins the network like a real host , In addition, the virtual machine will also
Through the actual router ;
NAT pattern :

* The network card of the virtual machine is linked to the network card of the host VMnet8 upper , At this time, the VMware NAT Service
The service acts as a router , Be responsible for sending the packets sent by the virtual machine to the actual network after address translation .
* Virtual machine IP Address with host VMware DHCP Service Responsible for distribution ,
Virtual machine IP Address and host IP Address is not in a network segment
* NAT This mode is suitable for use in environments without routers ;
Of course, it can also be used in LAN with router ;
Host-only pattern :

* The virtual machine can only communicate with the host ;
* The network card of the virtual machine is linked to the network card of the host VMnet1 upper , However, the host system does not provide any routing services for the virtual machine , Virtual machine cannot access the Internet .
Complete the virtual machine separately , Network configuration of virtual network card .

3. Basic network communication test :
use ping Command enables virtual machine to access local host ;
View hosts first IP to configure
obtain

Then use ping Command enables virtual machine to access local host

use ping Command enables the local host to access the virtual machine ;

* Web Service access test
Visit Baidu
Ping www.baidu.com

Successful access
<>PART 3 LINUX Common command exercises

In the command window , With the right command , Realize the following functions :

*
display LINUX Current system date and time .

*
with yyyy/mm/dd(2021/09/09) Display the current date of the system in the format of .

*
with yyyy-mm-dd(2021-09-09) Display the current date of the system in the format of .

perhaps

*
View online user information .

*
Show calendar for current month .

*
display 2021 Calendar for the whole year .

* display 2021 year 8 Calendar for month .

*
see LINUX Systematic Shell Interpreter version .

*
View information about the current operating system , Use separately -r,-m,-i,-v And other different options .

*
View current working directory .

*
Write the calendar of the current month to a file , File name is caltext.
( explain : The file storage directory should preferably be set as the user's home directory )

11. take 2021 year 1 Attach monthly calendar to file caltext in .

13. Statistics file with command caltext Rows of , Number of words , Number of bytes .

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