Shell Programming and Scripting

Hello,
I'm not much familiar with scripting, just a little bit. Maybe someone could give an advice how implement my task. It might be in shell or perl.
I have linux system where I install Kerberos. Now I have to add user. It's done like this from prompt: 1. run kadmin.local 2. it switches to admin prompt and then I have to run addprinc <user_name>. This brings me to the next line which ask me to provide password , after that it requests me to provide password one more time. That's the procedure and it works for me fine. The issue is that I have to add 1000 users. They will be like user1, user2 ... user1000 and have the same password. So my goal is to write a script which will run a loop with 1000 iteration, increase username by one and feed password 2 times.
Could someone help me how to write this kind of script? My main confusion is how to feed the line with the password.
Thanks in advance.

You may want to have a look at "Expect" to automate your task. Check the man page on your system for a good introduction. Also, if you google "expect nist", the first link takes you to the Expect homepage that has a wealth of information and a very good FAQ section as well.

tyler_durden