Launch and run the commands from shell script

Hello,

I have a requirement to launch a buzybox (Qemu)shell and needs to pass the commands to get the result. How i can achieve this.

for example:

I have the running qemu and i am telnetting to get shell.

Open the terminal and do a
"telnet 192.168.100.3"
this command will takes to a busybox shell now type "ps" command this will gives all the running process inside the qemu.

Now i want to automate the above steps in a shell scripting something like
===============
#! /bin/sh
telnet 192.168.100.3
ps
===============

Please Help Me.
-Hari