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From: Lawrence D'Oliveiro <ldo@nz.invalid>
Newsgroups: comp.os.vms
Subject: Re: Upcoming time boundary events
Date: Mon, 2 Jun 2025 01:17:21 -0000 (UTC)
Organization: A noiseless patient Spider
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On Sun, 1 Jun 2025 19:27:48 -0400, Arne Vajhøj wrote:

> $ typ tst.com
> $ open/read/write f 0"myusername mypassword"::"task=add.com"
> $ write f "123"
> $ write f "456"
> $ read f res
> $ close f
> $ write sys$output res
> $ exit

I tried doing a bash equivalent to this, involving opening a remote 
connection and holding it open while feeding it numbers one at a time. But 
I couldn’t get that to work. Something about the syntax for dynamic 
redirections (and closing of dynamically-assigned FDs) that I don’t 
understand. Or that isn’t implemented properly.

But this does work:

    ldo@theon:~> echo 123 + 456 | ssh hypatia bc
    579