KVM/Install KVM in an Ubuntu Server

< KVM
sudo apt-get -y install qemu-kvm libvirt-daemon-system libvirt-clients bridge-utils virtinst && sudo adduser `id -un` libvirt && sudo adduser `id -un` kvm && virsh list --all


And create your fist guest machine from command line using virt-install python script.

virt-install --virt-type kvm --name buster-amd64 --memory 1G --cdrom ~/iso/Debian/debian-10.0.0-amd64-netinst.iso --disk size=10G --os-variant debian10