[ -n "$groups" ] && yum -c ${vdir}/etc/yum.conf --installroot=${vdir} -y groupinstall $groups
if [ -f "${vdir}/proc/cpuinfo" ] ; then
[ -n "$groups" ] && yum -c ${vdir}/etc/yum.conf --installroot=${vdir} -y groupinstall $groups
if [ -f "${vdir}/proc/cpuinfo" ] ; then