update Gentoo Linux

updateGentoo.sh

#!/bin/bash                                                                                                                        
#rm /usr/portage/distfiles/*                                                                                                       
renice +20 -p $$                                                                                                                   
ionice -c3 -p $$                                                                                                                   
                                                                                                                                   
pgrep emerge >/dev/null || rm /var/tmp/portage/*-* -rf                                                                             
emerge-webrsync && eix-update                                                                                                      
ARGS="--quiet-build --load-average=10 --jobs=3"                                                                                    
echo emerge -tv --keep-going --update --deep --newuse $ARGS @system                                                                
MAKEOPTS="-j4" emerge -tv --keep-going --update --deep --newuse $ARGS @system                                                      
echo emerge -tv --keep-going --update --deep --newuse $ARGS @world                                                                 
MAKEOPTS="-j4" emerge -tv --keep-going --update --deep --newuse $ARGS @world
#MAKEOPTS="-j4" emerge $ARGS -1tv x11-drivers/nvidia-drivers x11-drivers/xf86-input-evdev &&
#eselect opengl set nvidia

python-updater -- $ARGS
revdep-rebuild -- $ARGS

#emerge -tv --depclean -a