Something

#!/bin/bash


KER_NAME=gentoo
#KER_NAME=sabayon

eselect kernel set `eselect kernel list | grep $KER_NAME | wc -l`
zcat /proc/config.gz > /usr/src/linux/`date +%m%d%y`.config
genkernel --kernel-config=/usr/src/linux/`date +%m%d%y`.config --bootloader=grub --splash=sabayon --kernel-cc=/usr/lib/ccache/bin/gcc all
module-rebuild rebuild
emerge nvidia-drivers