It's easier to understand when you format your code so that's more manageable to work with and read ...
Code:
select action in "blabla" "blabla" "quit"
do
case $action in
"blabla") echo "I was passed blabla."
echo "Now executing a command..."
somecommandhere ;; #.... for each possible command in $action
"quit") break ;;
*) print "this is not an option, try again" ;;
esac
done
