Shell Programming and Scripting

Hello,
I have a ksh which can be run interactively with read etc waiting for input and so forth.
Do you have an idea how can I invoke the ksh and supply a sequence of keystrokes that will feed the executable flow so that it will automatically run as if someone actually walked through one prompt at a time, responding to them?
I hope this is possible, it almost seem that I should place all of the readable responses to reads etc into a buffer and that will feed the reads etc.
Is it something that can be done?

Please let me know.

Thanks alot!

Pipe the repsonses.

To provide a stream of ys:

Code:

yes | your_script

To provide a stream of ns:

Code:

yes n | your_script

To provide a mixed bag:

Code:

printf "%s\n" a b c d e f ... | your_script

Well, I tryed your suggestions, but it does not seem to work properly.
The first prompt to be answered in the flow of the ksh is a select statement where a 'menu' is displayed and the prompt is to pick one of the choices. I tried various approaches on piping the selection to the ksh. at execution time what I get is a is a looping of the menu on the screen over and over, it seems my choice gets received but not properly interpreted by the ksh.
Any idea?
Thanks.

Not without seeing the script.

Great, I think I got it to work using your suggestion of the printf and piping something like:
printf "%s\n%s\n%s\n\n%s\n" 5 1 4 q | myname.ksh
this is executing like I started my ksh pressed 5 followed by enter,1 followed by enter,4 followed by enter, another enter and finally a q followed by enter.

One more question: how can I code a way to understand inside the script that itself has been invoked with a piped input or know is has been invoked by itself (no piped input) and therefore there is a user driving at the keyboard?
I really hope you have an idea.
Thanks.

Not sure why you need this in this context, but.....

Code:

#!/bin/ksh

if [ ! -t 0 ]; then
   echo 'no term, i.e. piped'
fi;

This is the same and looks neater:

Code:

printf "%s\n" 5 1 4 "" q | myname.ksh