shell例子的延伸思考

#!/bin/bash

function function_a
{
echo " my name is tom !!!"

}

function function_b
{

echo "your name is jim!!"
}

function function_c
{
echo "please enter your name :"

read name
case $name in
tom)
function_a
;;
jim)
function_b
;;

*)
function_c
;;
esac

}

echo "please enter your name :"
read name
case $name in
tom)
function_a

;;
jim)
function_b
;;

*)
function_c
;;
esac

此例用到case语句以及函数，思考，怎样使输入的次数达到3次就不在运行？

ubuntu下定义函数

#！/bin/bash

#!称“魔数”.