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From: arnold@skeeve.com
To: johnl@taugh.com, crossd@gmail.com
Cc: tuhs@tuhs.org
Subject: [TUHS] Re: Pipes (was Re: After 50 years, what has the Impact of Unix been?)
Date: Fri, 06 Dec 2024 09:46:31 -0700	[thread overview]
Message-ID: <202412061646.4B6GkVgU871634@freefriends.org> (raw)
In-Reply-To: <CAEoi9W4Sy9G3pePPTk=zyh2n_UbWetNU+4c4yaVPgXX2UAacQw@mail.gmail.com>

Dan Cross <crossd@gmail.com> wrote:

> My claim is simply that extant shell syntax isn't really amenable to
> this in a natural way. As Chet and Arnold pointed out, process
> substitution as pioneered in ksh gets us a little closer, but it's not
> quite as general (I believe any such graphs would have to be acyclic);
> it's certainly not as syntactically pleasant.
>
> There has been work along these lines; I was sent a reference off-list
> to a paper by Spinellis and Fragkoulis about a DAG-oriented shell:
> https://www.spinellis.gr/sw/dgsh/, which seems relevant.

In the early-to-mid 1980s, the Georgia Tech Software Tools Subsystem
for Prime Computers offered three standard inputs, three standard
outputs, and a shell with syntax to connect things as you desired.
I don't remember the syntax though.  I also don't know how much
this feature was really used.

Arnold

  reply	other threads:[~2024-12-06 16:47 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-12-04  3:17 [TUHS] After 50 years, what has the Impact of Unix been? sjenkin
2024-12-04 13:05 ` [TUHS] " Marc Donner
2024-12-04 13:40   ` William Cheswick
2024-12-04 15:02   ` Rich Salz
2024-12-05  3:08   ` John Levine
2024-12-05 15:19     ` [TUHS] Re: Pipes (was Re: After 50 years, what has the Impact of Unix been?) Dan Cross
2024-12-05 16:00       ` John R Levine
2024-12-05 16:17         ` Heinz Lycklama
2024-12-05 17:06           ` Marc Rochkind
2024-12-05 17:53             ` John Cowan
2024-12-05 18:05             ` John Levine
2024-12-05 17:22           ` Paul Winalski
2024-12-05 18:19         ` Ron Natalie
2024-12-06  2:29           ` Adam Thornton
2024-12-07 20:38             ` Ron Natalie
2024-12-05 16:55       ` Adam Thornton
2024-12-05 17:35       ` Chet Ramey via TUHS
2024-12-05 20:55         ` arnold
2024-12-05 21:12           ` Dan Cross
2024-12-05 21:50             ` Marc Rochkind
2024-12-05 22:03             ` Warner Losh
2024-12-05 22:19               ` Chet Ramey via TUHS
2024-12-05 23:07                 ` Marc Rochkind
2024-12-06  8:16                   ` Diomidis Spinellis
2024-12-06  0:46                 ` Alexis
2024-12-06 21:46                   ` Chet Ramey via TUHS
2024-12-05 23:07               ` arnold
2024-12-06  1:09                 ` G. Branden Robinson
2024-12-06  1:31                   ` Greg A. Woods
2024-12-06  2:05                     ` Steve Nickolas
2024-12-06 16:44                     ` arnold
2024-12-05 22:05             ` Bakul Shah via TUHS
2024-12-06  2:02             ` John Levine
2024-12-06  2:21               ` Dan Cross
2024-12-06 16:46                 ` arnold [this message]
2024-12-06  2:26 Douglas McIlroy

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