Shell prompt example

prompt.sh

stty -echo
attempt=0
while [ "$attempt" -lt 3 ]; do
  printf "Do you wish to continue? [y/n]: "
  read answer
  case $answer in
      y ) printf "\nOk!\n"; break;;
      n ) printf "\nToo bad.\n"; break;;
      * ) printf "\nPlease answer y or n.\n";;
  esac
  attempt=$(($attempt + 1))
done
if [ "$attempt" -eq 3 ]
then printf "Three tries you're out.\n"
fi
stty echo