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From: al@io.ee.pitt.edu (Alan Martello)
Newsgroups: comp.lang.perl
Subject: reading AND writing to processes
Message-ID: <7497@pitt.UUCP>
Date: 3 May 90 17:40:24 GMT
Sender: news@pitt.UUCP
Reply-To: al@io.ee.pitt.edu (Alan Martello)
Organization: Electrical Engineering, Univ. of Pittsburgh
Lines: 26

I have a perl script which must rsh to another system and
run specific commands (depending on the result of querying the
system with other commands).  

The following works as expected:
   open (RSH_FH, "rsh othermachine ls |");

but is a little too clunky for my needs (I don't want an open
for each command).

Instead, I'd prefer something like the following:
    open (RSH_FH, "| rsh othermachine |");

That is, I want to read AND write to the same rsh process.  
For example, the first thing I need to do is to supply a password 
if logging in as a different user.

I tried minimal experimentation and couldn't get it to do
the desired thing... Perhaps a perl/shell wizard can shed
some light on the feasability of my endeavor.  I though about
trying to use forks, etc. but didn't try it.  Ideas?

*******************************************************************
       Alan R. Martello        Electrical Engineering Dept.
        al@ee.pitt.edu           University of Pittsburgh
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