# Find the list of the accepted OS variants
 osinfo-query os | less 
osinfo-query os | grep debian
osinfo-query os | grep freebsd

# List running VMs / domains
virsh list	
# shutdown machine
virsh shutdown debian9-vm1
# suspend
virsh suspend debian9-vm1
# reboot machine
virsh reboot debian9-vm1
# Delete/remove a vm/domain called debian9-vm1
virsh undefine debian9-vm1
virsh destroy debian9-vm1