y/Nを見てコマンド実行

test.sh

function yes_no {
  msg=$1
  while :
  do
    echo -n "${msg} y/N: "
    read ans
    case $ans in
    [yY]) return 0 ;;
    [nN]) return 1 ;;
    esac
  done
}

command="hogehoge"
yes_no "exec command:$command "
if [ $? -eq 0 ];then
  eval $command
  echo finished
else
  exit
fi