From: Chet Ramey <chet.ramey@case.edu>
To: George Michaelson <ggm@algebras.org>, Dave Horsfall <dave@horsfall.org>
Cc: The Eunuchs Hysterical Society <tuhs@tuhs.org>
Subject: Re: [TUHS] Where did the "~" come from
Date: Thu, 19 Nov 2020 11:16:47 -0500 [thread overview]
Message-ID: <6da03a38-0645-f90c-1992-bfc99a51cfc9@case.edu> (raw)
In-Reply-To: <CAKr6gn2daDRmR=xWzDQRkrO0x9SoAq3NHnCK84-XWGUd3sK9rg@mail.gmail.com>
On 11/18/20 7:44 PM, George Michaelson wrote:
> A related but different "thing" is when the cd activity became a
> pushdown stack of 2 (is it more? I never bothered checking)
>
> somebody realised going "there and back again" was innately useful.
It was definitely in ksh by 1986. It never made it into any of the Bourne
shells, but POSIX adopted it because it was in ksh88. I don't know
whether it was in the 1983 ksh version.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU chet@case.edu http://tiswww.cwru.edu/~chet/
next prev parent reply other threads:[~2020-11-19 16:23 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-18 22:25 Clem Cole
2020-11-18 22:41 ` Dave Horsfall
2020-11-19 0:44 ` George Michaelson
2020-11-19 13:45 ` Ron Natalie
2020-11-19 16:16 ` Chet Ramey [this message]
2020-11-19 15:50 ` Warner Losh
2020-11-19 17:22 ` Mary Ann Horton
2020-11-19 18:43 ` Clem Cole
2020-11-19 20:02 ` Michael Kjörling
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