Topic 9

Dates: 3/28/2018
Start-up and Run Levels. Scheduled jobs (at, cron)
Linux System Administration


Exercises: working with Systemd targets


  • Viewing the Default Target: 
    
systemctl get-default
  • Viewing the Current Target 
    
systemctl list-units --type target


  • Changing the Default Target 
    
systemctl set-default multi-user.target
    Reboot. Run commands 
    
systemctl get-default
systemctl list-units --type target

    Set password for root: 
    
sudo -s
passwd

  • Changing the Current Target 
    
systemctl isolate graphical.target
    Check the Target units 
    
systemctl list-units --type target

  • Changing to Rescue Mode 
    
systemctl rescue
    Check the Target units 
    
systemctl list-units --type target

  • Changing to Emergency Mode 
    
systemctl emergency
    Check the Target units 
    
systemctl list-units --type target



    • Take me to the Course Website