How to do it...

To start a KVM instance, ensure that it's running and finally terminate it, execute the following:

1.  Start a QEMU instance with KVM support: 

root@kvm:~# qemu-system-x86_64 -name debian -vnc 146.20.141.254:0 -m 1024 -drive format=raw,index=2,file=debian.img -enable-kvm -daemonize    
root@kvm:~#

1. Ensure that the instance is running: 

root@kvm:~# pgrep -lfa qemu    
4895 qemu-system-x86_64 -name debian -vnc 146.20.141.254:0 -m 1024 -drive format=raw,index=2,file=debian.img -enable-kvm -daemonize    
root@kvm:~#

1. Terminate the instance:   

root@kvm:~# pkill qemu    
root@kvm:~#