今天天气阴，有点儿无聊，就做了这么无趣的玩样儿。。。。。。

#!/bin/bash#Date:2017-6-20#Version:1.0#Author:xcn(baishuchao@yeah.net)menu(){cat<<END1.[installlamp]2.[installlnmp]3.[exit]plsinputthenumyouwant:ENDread-t15a}menu1(){cat<<END1.[APCHE]2.[MYSQL]3.[PHP]4.[BACK]Plsinputthelampmenunumyouwant:*************************************ENDreadnum1}menu2(){cat<<END1.[NGINX]2.[MYSQL]3.[PHP]4.[BACK]Plsinputthelnmpmenunumyouwant:**************************************ENDreadnum2}#######################[menu1]############################menu[$a-eq1]&&{clearmenu1[$num1-eq1]&&{echo"installingapache"sleep3echo"installisapacheed"menu1}[$num1-eq2]&&{echo"installingmysql"sleep3echo"installismysqled"menu1}[$num1-eq3]&&{echo"installingphp"sleep3echo"installisphp"menu1}[$num1-eq4]&&{echo"returntopreviousmenu"menu}}####################[menu2]########################################[$a-eq2]&&{clearmenu2[$num2-eq1]&&{echo"installingnginx"sleep3echo"installisnginx"menu2}[$num2-eq2]&&{echo"installingmysql"sleep3echo"installismysqled"menu2}[$num2-eq3]&&{echo"installingphp"sleep3echo"installisphp"menu2}[$num2-eq4]&&{echo"returntopreviousmenu"menu}}[$a-eq3]&&{echo"baybay"exit}奇迹出现：[root@XCN~]#shmenu.sh1.[installlamp]2.[installlnmp]3.[exit]plsinputthenumyouwant:11.[APCHE]2.[MYSQL]3.[PHP]4.[BACK]Plsinputthelampmenunumyouwant:*************************************2installingmysqlinstallismysqled1.[APCHE]2.[MYSQL]3.[PHP]4.[BACK]Plsinputthelampmenunumyouwant:*************************************