Add this in your file of
/etc/bash.bashrc, makesure you logged in as root.
while true; do # Don't exit at Ctrl-C trap "echo" SIGINT printf "n" echo -n " Who are you guys? "; read -s name; if [ "$name" == "agus" ]; then reset printf "n Welcome my KING! you are the best!!n" printf " "; date; printf " Please start your activity with Basmalahnn" break else printf "n Heey you! why you here!! You are not owner of this machine!n" fi done