Ask for Input in Bash

ask_for_input.sh

 echo -n "Are you sure (Y/N)? "            #01
 answered=                                 #02
 while [[ ! $answered ]]; do               #03
     read -r -n 1 -s answer                #04
     if [[ $answer = [Yy] ]]; then         #05
         answered="yes"                    #06
     elif [[ $answer = [Nn] ]]; then       #07
         answered="no"                     #08
     fi                                    #09
 done                                      #10
       
printf "\n%s\n" $answered                  #12