Linux Shell 交互式腳本，用戶可以從中選擇一值

1.case語句控制流

#！/bin/sh

echo "please input number 1 to 3"

read number

case $number in

1) echo "you input 1"

  ;;

2|3) echo "you input 2 or 3"

  ;;

*) echo "error! the number you input isn't 1 to 3"

 ;;

esac

按順序執行，若匹配不到前面的1,2,3，到匹配到*則輸出相應信息

2. select語句控制

select var in ... ; do

break

done

$var

#!/bin/sh
echo "What is your favourite firuit?"
echo "1) Apple"
echo "2) Orange"
echo "3) Banana"
read number
case $number in
1)echo "your favourite firuit is Apple."
;;
2)echo "your favourite firuit is Orange."
;;
3)echo "your favourite firuit is Banana."
;;
esac

#！/bin/sh
echo "What is your favourite firuit?"
select var in "Apple" "Orange" "Banana";do
break
done
echo "your favourite firuit is $var."

執行以上腳本，均可實現下面交互式功能

What is your favourite firuit?

1) Apple

2) Orange

3) Banana

#? 1

your favourite firuit is Apple.