Just building KVM images for myself

kvm-build.sh

#!/bin/bash
# Yazz Building KVM images

ubuntu="quantal"
name=(bm-installer) # Just add more seperated by a space to build 
domain="example.com"
nic="eth0"
location="http://us.archive.ubuntu.com/ubuntu/dists/${ubuntu}/main/installer-amd64/"
preseed="http://192.168.41.89/preseed.cfg"
vm_disks="$HOME/kvm"
virt_type="kvm"
img_size="8" ; # in Gigs
ram="512"
os_variant="ubuntu${ubuntu}"

if [ -d ${vm_disks} ] ; then 
    mkdir -p ${vm_disks}
fi

x=0
for kvm_name in ${name[@]} ; do
        img_name=${kvm_name}.img
        virsh destroy ${kvm_name}
        virsh undefine ${kvm_name}
        if [ -f ${vm_disks}/${img_name} ] ; then
                rm -rf ${vm_disks}/${img_name}
        fi
        if [ -f /etc/libvirt/qemu/${kvm_name}.xml ] ; then
                rm -rf /etc/libvirt/qemu/${kvm_name}.xml
        fi
        brctl delbr ${kvm_name}-${x}
        brctl addbr ${kvm_name}-${x}
        virt-install --name ${kvm_name} \
                --connect qemu:///system \
                --os-type linux \
                --os-variant ${os_variant} \
                --virt-type ${virt_type} \
                --ram ${ram} \
                --disk path="${vm_disks}/${img_name},size=${img_size},sparse=true" \
                --network network:default \
                --network bridge=${kvm_name}-${x} \
                --vnc \
                --location=${location} \
                --extra-args="url=${preseed} interface=${nic} hostname=${kvm_name} domain=${domain} DEBCONF_INTERFACE=noninteractive DEBCONF_DEBUG=5 auto=true"  &
        let "x=x+1"
        echo "Completed ${kvm_name} ^G"
done