shell实现多级菜单脚本编写

#!/bin/bash
#
[ -f /etc/init.d/functions ] && . /etc/init.d/functions
function menu(){
cat << EOF
----------------------------------------------
|*******Please Enter Your Choice:[1-4]*******|
----------------------------------------------
*   `echo -e "\033[35m 1)lamp install\033[0m"`
*   `echo -e "\033[35m 2)lnmp install\033[0m"`
*   `echo -e "\033[35m 3)quit\033[0m"`
*   `echo -e "\033[35m 4)return main menu\033[0m"`
EOF
}
function lamp_menu(){
cat << EOF
----------------------------------------------
|*******Please Enter Your Choice:[1-4]*******|
----------------------------------------------
*   `echo -e "\033[35m 1)http install\033[0m"`
*   `echo -e "\033[35m 2)mysql install\033[0m"`
*   `echo -e "\033[35m 3)php install\033[0m"`
*   `echo -e "\033[35m 4)return main menu\033[0m"`
EOF
read -p "####please input second_lamp optios[1-4]: " num2
expr $num2 + 1 &>/dev/null  #这里加1，判断输入的是不是整数。
if [ $? -ne 0 ];then    #如果不等于零，代表输入不是整数。
echo "###########################"
echo "Waing !!!,input error   "
echo "Please enter choose[1-4]:"
echo "##########################"
exit 1
fi
case $num2 in
1)
action "Installed httpd..." /bin/true
sleep 2
lamp_menu
;;
2)
action "Installed MySQL..." /bin/true
sleep 2
lamp_menu
;;
3)
action "Installed PHP..." /bin/true
sleep 2
lamp_menu
;;
4)
clear
menu
;;
*)
clear
echo
echo -e "\033[31mYour Enter the wrong,Please input again Choice:[1-4]\033[0m"
lamp_menu
esac
}
function lnmp_menu(){
cat << EOF
----------------------------------------------
|*******Please Enter Your Choice:[1-4]*******|
----------------------------------------------
*   `echo -e "\033[35m 1)nginx install\033[0m"`
*   `echo -e "\033[35m 2)mysql install\033[0m"`
*   `echo -e "\033[35m 3)php install\033[0m"`
*   `echo -e "\033[35m 4)return main menu\033[0m"`
EOF
read -p "please input second_lnmp options[1-4]: " num3
expr $num2 + 1 &>/dev/null  #这里加1，判断输入的是不是整数。
if [ $? -ne 0 ];then  #如果不等于零，代表输入不是整数。
echo
echo "Please enter a integer"
exit 1
fi
case $num3 in
1)
action "Installed Nginx..." /bin/true
sleep 2
lnmp_menu
;;
2)
action "Installed MySQL..." /bin/true
sleep 2
clear
lnmp_menu
;;
3)
action "Installed PHP..." /bin/true
sleep 2
clear
lnmp_menu
;;
4)
clear
menu
;;
*)
clear
echo
echo -e "\033[31mYour Enter the wrong,Please input again Choice:[1-4]\033[0m"
lnmp_menu
esac
}
clear
menu
while true ;do
read -p "##please Enter Your first_menu Choice:[1-4]" num1
expr $num1 + 1 &>/dev/null   #这里加1，判断输入的是不是整数。
if [ $? -ne 0 ];then   #如果不等于零，代表输入不是整数。
echo "----------------------------"
echo "|      Waring!!!           |"
echo "|Please Enter Right Choice!|"
echo "----------------------------"
sleep 1
case $num1 in
1)
clear
lamp_menu
;;
2)
clear
lnmp_menu
;;
3)
clear
break
;;
4)
clear
menu
;;
*)
clear
echo -e "\033[31mYour Enter a number Error,Please Enter again Choice:[1-4]
: \033[0m"
menu
esac
done