script for mysql + apache + php installation

Question

I can install MySQL or any package from the code below but I wish to install multiple packages, one by one, from a single script.

---

echo "Do you wish to install MySql?" 
select yn in "Yes" "No"; do 
case $yn in 
Yes ) yum -y install mysql; break;; 
No ) exit;; 
esac
done

---

1). If type No then it will go on to next level eg Do you wish to install Apache .

2). If type Yes it will install MySQL then ask for next packages eg Do you wish to install Apache .

Could someone help me writing this script?

I will explain to you. I want to create script for MySQL + Apache + PHP installation.
If MySQL is already installed in my machine, I don't want to install it, then it will ask for me Do you wish to install Apache ? if I press 1 it install then it will ask for me Do you wish to install PHP then exit automatically.

Answer 1

Correct syntax for your script snippet for Bourne shell would be:

echo "Do you wish to install MySql?" 
read yn
case "$yn" in 
    Yes)
        yum install mysql
        ;; 
    No) ;; 
esac