SYS: Boot, reboot, and shut down a system normally.

Switch on a physical server or a virtual machine (in this case, type: # virsh start vm).
Connect to the console.

To reboot the system, choose one command among these:

# reboot
# shutdown -r now
# init 6

To shutdown the system, choose one command among these:

# shutdown -h now
# init 0

To switch off the system, choose one command among these:

# halt
# poweroff

To get the current run level, type:

# runlevel

To change the current run level (where X is the new run level), type:

# init X