shell 菜单脚本之 read choice

# Display a Menu
while true
do
    clear
    echo "                  *************************************************"
    echo "                  *          欢迎使用黄黄交易管理系统             *"
    echo "                  *                2017-07-01                     *"
    echo "                  *                                               *"
    echo "                  *************************************************"
    echo
    echo
    echo
    echo
    echo "根据下面的提示选择操作"
    echo 
    echo "1) 启动黄黄交易服务器                           90) 查询系统磁盘空间"
    echo "2) 停止黄黄交易服务器                           91) 查询系统运行状态"
    echo "3) 监控黄黄交易服务器进程                       "
    echo 
    echo
    echo "99) 退出"
    echo "输入操作选择: "
        >/dev/null
    read CHOICE
    case "$CHOICE" in
        1) echo "启动黄黄交易服务器... "
                        ./start.sh ;
                        sleep 5;
                        echo " 回车继续......";
                        read anykey;;
        2) echo "停止黄黄交易服务器..."
            ./stop.sh;
                         echo "stop end"
                         read anykey;;
        3) echo "查找系统进程运行状态..."
                clear;
                echo "查找系统进程运行状态...";
                ./ppp monitor;
                ./ppp java;
                ./ppp offering
                echo "回车继续......";
                read anykey;;
        90) echo "Unloading..."
                clear;
                echo "                  ******  磁盘的使用状况如下  ******"
                df -m;
                echo "回车继续......";
                read anykey;;
        91) echo ""
                clear;
                vmstat 1 10;

                echo "回车继续......";
                read anykey;;
        99) exit;;
        *) echo "输入无效!!!!!!"
                        echo "回车继续.....";
                        read anykey;;
    esac
done