create a shell script to install updates - scripting

Question

OK based on some additional research and the yum answer below, this is what i would like my script to do:
extract the updates
install the updates in a specific order
wait a few seconds for the yum update to finish for each section
reset the root account password (how do i hardcode or set that via the script?)
reset the ssh account password (how do i hardcode or set that via the script?)
clear the history
remove the files
prompt for a reboot
#!/bin/sh
# Run as root
# This extracts the tar copied to the server
tar -xf updates
sleep 5
tar -xf app
sleep 2
# This moves to the February updates and install it.
cd /updates/feb
yum -y update *.rpm
sleep 5
# This moves to the March updates and install it.
cd /updates/mar
yum -y update *.rpm
sleep 5
# This moves to the April updates and install it.
cd /updates/apr
yum -y update *.rpm
sleep 5
# This moves to the May updates and install it.
cd /updates/may
yum -y update *.rpm
sleep 5
# This moves to the June updates and install it.
cd /updates/june
yum -y update *.rpm
sleep 5
# This moves to the August updates and install it.
cd /updates/aug
yum -y update *.rpm
sleep 5
# This moves to the September updates and install it.
cd /updates/sep
yum -y update *.rpm
sleep 5
# This moves to the APP dependencies and install it.
cd /updates/app
yum -y install *.rpm
sleep 5
# This resets the root password
passwd root
# This resets the ssh account password
passwd ssh_user
# This removes the files from the home directory
cd /home/user
rm -rf /updates
wait 5
# This clears the history and screen
history -c
clear
# This reboots the server with a y/n prompt
reboot
EDITED for updates and to apologize for being a noob!

Answer 1

Add -y (tells yum to assume "yes" answers) like this:
yum -y update *.rpm