[Q] How to force user change passwd on next login

[mcclnx mcc]

We have Redhat As 3.0 on DELL server.  I plan to force
user change password on next login.

The command I use :

    chage user1

it will ask me several questions interactively.  I
want put command on batch file and change bunch of
user accounts.  
Does anyone know how to do it?

Thanks.

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