Ubuntu16 virtual machine installation and root user configuration

I used VMware installation

1. Create a new virtual machine, select typical
   
2. Choose to install the operating system later
   
3. Select the corresponding version Ubuntu64 bit
   
4. Set the virtual machine name and hard disk location
   
5. The disk size is allocated according to the needs
   
6. Custom hardware
   
7. The hardware needs to be configured according to your needs (I will use it for development in the future, so I will give more)
   firstly the memory
   
   and then the CPU (to be virtualized in the future, so I check the support for CPU virtualization) to
   
   choose the ISO image to use File The
   
   network connection is selected according to the needs (I chose the default NAT)
   
   and other settings can be defaulted
8. Complete the configuration
   
9. Start the virtual machine
   
10. Choose language, install Ubuntu
    
11. I don't want to check it, just continue
    
12. The installation type is selected by default (you can choose other if you want to partition by yourself)
    
13. Install now, continue
    
14. Time zone selection
    
15. Keyboard layout, default, continue
    
16. Set your own username and password
    
17. Then, wait for the installation (a long time)
    
18. Installation is complete, now restart
    
19. Just log in
    

At this point the installation is over, the following is the configuration of the root user

root user configuration

1. Open terminal
   
2. Set root user password

   sudo passwd root
   

   
3. Switch root user, enter the password to enter

   su root
   

   
4. Set root to boot

   sudo gedit /usr/share/lightdm/lightdm.conf.d/50-unity-greeter.conf
   #添加以下内容后保存退出
   user-session=ubuntu
   greeter-show-manual-login=true
   all-guest=false
   

   
5. Modify the graphical interface login

   sudo gedit /root/.profile
   #将最后一行前面加上 tty -s &&
   

   Modify it to look like this, save and exit
   
6. Then restart

   sudo reboot
   

7. Then you can log in as the root user
   
8. Landed successfully