Re: Text based synchronous communication tool for Linux?

From	Geoff Clare <geoff@clare.See-My-Signature.invalid>
Newsgroups	comp.unix.programmer
Subject	Re: Text based synchronous communication tool for Linux?
Date	2024-12-09 15:02 +0000
Message-ID	<vcdj2l-elf.ln1@ID-313840.user.individual.net> (permalink)
References	<vj44hq$3q2ag$1@dont-email.me> <vj49mj$3r6as$1@dont-email.me> <vj4ha0$3t62j$1@dont-email.me> <at8j2l-elf.ln1@ID-313840.user.individual.net> <wwvttbd9bjh.fsf@LkoBDZeT.terraraq.uk>

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Richard Kettlewell wrote:

> Geoff Clare <geoff@clare.See-My-Signature.invalid> writes:
>> Muttley wrote:
>>
>>> talk is an age old unix util that allows people on the same machine to chat.
>>> Even MacOS has it installed.
>>
>> "Even" MacOS?  It's required for UNIX® conformance - if MacOS didn't
>> have talk, it wouldn't be able to be certified as UNIX.
> 
> I was surprised by that. Do you happen to know what motivated its
> inclusion?

The original decision to include talk goes back to POSIX.2-1992, where
the rationale begins with this paragraph:

    The write utility was included in POSIX.2 since it can be
    implemented on all terminal types. The talk utility, which cannot
    be implemented on certain terminals, was considered to be a
    ‘‘better’’ communications interface. Both of these programs are
    in widespread use on historical implementations. Therefore, both
    utilities have been specified.

> While this thread does show that there’s some demand for the
> application, it seems a surprising thing to include in a OS specification.

It's part of the "User Portability Utilities" option (which includes
things like ex and vi), so it's optional for POSIX conformance but
that option is mandated for UNIX conformance.

-- 
Geoff Clare <netnews@gclare.org.uk>

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Text based synchronous communication tool for Linux? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-12-08 13:47 +0100
  Re: Text based synchronous communication tool for Linux? Richard Kettlewell <invalid@invalid.invalid> - 2024-12-08 13:14 +0000
    ytalk (Was: Text based synchronous communication tool for Linux?) gazelle@shell.xmission.com (Kenny McCormack) - 2024-12-08 17:18 +0000
    Re: Text based synchronous communication tool for Linux? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-12-09 16:32 +0100
  Re: Text based synchronous communication tool for Linux? John McCue <jmccue@whitedwf.jmcunx.com> - 2024-12-08 14:15 +0000
    Re: Text based synchronous communication tool for Linux? Muttley@DastardlyHQ.org - 2024-12-08 16:25 +0000
      Re: Text based synchronous communication tool for Linux? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-12-08 18:06 +0100
        Re: Text based synchronous communication tool for Linux? cross@spitfire.i.gajendra.net (Dan Cross) - 2024-12-08 18:36 +0000
          Re: Text based synchronous communication tool for Linux? Muttley@DastardlyHQ.org - 2024-12-09 08:25 +0000
            Re: Text based synchronous communication tool for Linux? cross@spitfire.i.gajendra.net (Dan Cross) - 2024-12-09 12:49 +0000
              Re: Text based synchronous communication tool for Linux? Muttley@DastardlyHQ.org - 2024-12-09 17:06 +0000
                Re: Text based synchronous communication tool for Linux? cross@spitfire.i.gajendra.net (Dan Cross) - 2024-12-09 17:11 +0000
                Re: Text based synchronous communication tool for Linux? Nicolas George <nicolas$george@salle-s.org> - 2024-12-09 17:56 +0000
        Re: Text based synchronous communication tool for Linux? Muttley@DastardlyHQ.org - 2024-12-09 08:23 +0000
          Re: Text based synchronous communication tool for Linux? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-12-09 09:37 +0100
            Re: Text based synchronous communication tool for Linux? Muttley@DastardlyHQ.org - 2024-12-09 09:11 +0000
              Re: Text based synchronous communication tool for Linux? gazelle@shell.xmission.com (Kenny McCormack) - 2024-12-09 14:27 +0000
              Re: Text based synchronous communication tool for Linux? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-12-09 16:21 +0100
                Re: Text based synchronous communication tool for Linux? Muttley@DastardlyHQ.org - 2024-12-09 17:13 +0000
                Re: Text based synchronous communication tool for Linux? James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-12-10 17:57 -0500
                [meta] Harry Potter, Physics, Tools, Perception, etc. (was Re: Text based synchronous communication tool for Linux?) Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-12-11 03:04 +0100
                Re: [meta] Harry Potter, Physics, Tools, Perception, etc. (was Re: Text Muttley@DastardlyHQ.org - 2024-12-11 08:37 +0000
                Re: [meta] Harry Potter, Physics, Tools, Perception, etc. (was Re: Text based synchronous communication tool for Linux?) cross@spitfire.i.gajendra.net (Dan Cross) - 2024-12-12 00:55 +0000
                Re: [meta] Harry Potter, Physics, Tools, Perception, etc. (was Re: Text Muttley@DastardlyHQ.org - 2024-12-12 08:39 +0000
                Re: Text based synchronous communication tool for Linux? Muttley@DastardlyHQ.org - 2024-12-11 08:35 +0000
                Re: Text based synchronous communication tool for Linux? James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-12-11 19:47 -0500
        Re: Text based synchronous communication tool for Linux? scott@slp53.sl.home (Scott Lurndal) - 2024-12-09 14:02 +0000
      Re: Text based synchronous communication tool for Linux? Geoff Clare <geoff@clare.See-My-Signature.invalid> - 2024-12-09 13:45 +0000
        Re: Text based synchronous communication tool for Linux? gazelle@shell.xmission.com (Kenny McCormack) - 2024-12-09 14:23 +0000
        Re: Text based synchronous communication tool for Linux? Richard Kettlewell <invalid@invalid.invalid> - 2024-12-09 14:27 +0000
          Re: Text based synchronous communication tool for Linux? Geoff Clare <geoff@clare.See-My-Signature.invalid> - 2024-12-09 15:02 +0000
        Re: Text based synchronous communication tool for Linux? Nicolas George <nicolas$george@salle-s.org> - 2024-12-09 15:23 +0000
          Re: Text based synchronous communication tool for Linux? Geoff Clare <geoff@clare.See-My-Signature.invalid> - 2024-12-11 13:36 +0000
        Re: Text based synchronous communication tool for Linux? vallor <vallor@cultnix.org> - 2024-12-09 19:30 +0000
          Re: Text based synchronous communication tool for Linux? Muttley@DastardlyHQ.org - 2024-12-10 08:36 +0000

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