根据用户输入循环/重复 Shell 脚本

Question

我编写了一个简单的脚本，将用户在地球上的体重转换为在月球上的体重。然而，在程序结束时，我试图询问用户是否想重复该过程并阅读他们的响应。

如果用户给予肯定回答，则脚本应重复，否则脚本应退出。

这是我到目前为止所拥有的，但是如果用户决定不退出，我无法弄清楚如何让脚本重复。

echo -n "Enter starting weight: "
read star

echo -n "Enter ending weight: "
read end

echo -n "Enter weight increment: "
read increment

while [ $star -le $end ]
do
  moonweight=`echo $star \* .166 | bc`
  echo "$star pounds on earth = $moonweight pounds on the moon"

  star=`expr $star + $increment`
done

notDone=true

while [ $notDone ]
do
  echo -n "Enter a number or Q to quit: "
  read var1 junk

  var1=`echo $var1 | tr 'A-Z' 'a-z'`

  if [ $var1 = "q" ]
  then
    echo "Goodbye"
    exit
  else
  fi
done

Answer 1

将其包装到另一个 while 循环中：

while :
do
    echo -n "Enter starting weight: "
    read star

    echo -n "Enter ending weight: "
    read end

    echo -n "Enter weight increment: "
    read increment

    while [ "$star" -le "$end" ]
    do
      moonweight=`echo $star \* .166 | bc`
      echo "$star pounds on earth = $moonweight pounds on the moon"

      star=`expr $star + $increment`
    done

    notDone=true

    while $notDone
    do
      echo -n "Enter a number or Q to quit: "
      read var1 junk

      var1=`echo $var1 | tr 'A-Z' 'a-z'`

      if [ "$var1" = "q" ]
      then
        echo "Goodbye"
        exit
      else
        notDone=false
      fi
    done
done