In this chapter, you learned:
systemctl reboot and systemctl poweroff reboot and power down a system, respectively.
systemctl isolate target-name.target switches to a new target at runtime.
systemctl get-default and systemctl set-default can be used to query and set the default target.
Use rd.break on the kernel command line to interrupt the boot process before control is handed over from the initramfs.
The root file system is mounted read-only under /sysroot.
The emergency target can be used to diagnose and fix file-system issues.
Click CREATE to build all of the virtual machines needed for the classroom lab environment. This may take several minutes to complete. Once created the environment can then be stopped and restarted to pause your experience.
If you DELETE your lab, you will remove all of the virtual machines in your classroom and lose all of your progress.