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From: Steven Friedrich <FreeBSD@insightbb.com>
To: freebsd-questions@freebsd.org, jaymo@cromagnon.cullmail.com
Date: Mon, 31 Jan 2005 14:22:39 -0500
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cc: Timothy Luoma <lists@tntluoma.com>
Subject: Re: running interactive program from shell script
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On Sunday 30 January 2005 11:23 pm, Jay Moore wrote:
> As for what I'm trying to do:
> I have a requirement to administer a number of remotely located embedded
> devices; these devices do not support ssh - only telnet. To avoid the
> obvious security issues, I am going to co-locate a "real" computer at each
> remote location. I will ssh into the "real" computer, and then telnet over
> a local network to the embedded device(s). I realize there are many ways of
> accomplishing this, but I'm kind of hung up on doing it "my way"  :)
>
> > > #! /bin/sh
> > >
> > >     (sleep 3;
> > >     echo "password";
> > >     sleep 3;
> > >     echo "ls -la";
> > >     sleep 3;
> > >     ) | telnet -l user 192.168.0.2
> >

I think all you need is to enclose it with a forever for loop.
I can't remember the syntax right now, but you can probably read man sh and 
figure it out. If you can't, let us know and I'll work it out...