PS3="Please select a number: "
select name in zhangsan lisi wangwu zhaoliu
do
    case $name in
    zhangsan)
        echo "Hello, zhangsan."
        ;;
    lisi)
        echo "Hello,lisi."
        ;;
    wangwu)
        echo "Hello, wangwu."
        ;;
    zhaoliu)
        echo "Hello, zhaoliu."
        ;;
    *)
        echo "Sorry, there is no such person."
        ;;
    esac
done
 

PS3：用於修改選擇菜單時顯示的內容，默認為#?

執行腳本，結果如下：

[root@shvpuppet01 ~]# sh a.sh 
1) zhangsan
2) lisi
3) wangwu
4) zhaoliu
Please select a number: 1
Hello, zhangsan.
Please select a number: 2
Hello,lisi.
Please select a number: 3
Hello, wangwu.
Please select a number: 4
Hello, zhaoliu.
Please select a number: ^C

可以通過ctrl+c退出菜單，也可以在菜單中加入一個退出的選擇

shell之select用法