From: chet.ramey@case.edu (Chet Ramey)
Subject: [TUHS] Bourne shell and comments
Date: Tue, 18 Apr 2017 16:56:26 -0400 [thread overview]
Message-ID: <2264b631-2c08-def1-6a55-0f64bce13997@case.edu> (raw)
In-Reply-To: <20170418204834.GA22198@minnie.tuhs.org>
On 4/18/17 4:48 PM, Warren Toomey wrote:
> I was trying to configure C news on 2.9BSD today and I found that its
> Bourne shell doesn't grok # comments. The Bourne shell in 2.11BSD does.
>
> So I thought: when did the Bourne (and other) shells first grok # as
> indicating a comment? Was this in response to #! being added to the
> kernel, or was it the other way around? And was the choice of #!
> arbitrary, or was it borrowed from somewhere else?
The Bourne shell got `#' comments in System III. csh had them very
early. I'm pretty sure Dennis Ritchie suggested the `#!' syntax before
they were added to the System III sh, but not much earlier.
ISTR that the Berkeley Pascal system had something like `#!' first.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU chet at case.edu http://cnswww.cns.cwru.edu/~chet/
next prev parent reply other threads:[~2017-04-18 20:56 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-18 20:48 Warren Toomey
2017-04-18 20:51 ` Ron Natalie
2017-04-18 21:45 ` Grant Taylor
2017-04-18 22:16 ` Ron Natalie
2017-04-18 22:40 ` Toby Thain
2017-04-19 18:36 ` Stephen Kitt
2017-04-19 20:35 ` Arthur Krewat
2017-04-19 0:50 ` Lyndon Nerenberg
2017-04-19 8:35 ` Andreas Kusalananda Kähäri
2017-04-19 16:31 ` Grant Taylor
2017-04-19 16:59 ` Andreas Kusalananda Kähäri
2017-04-19 17:36 ` Bakul Shah
2017-04-19 17:59 ` Grant Taylor
2017-04-20 20:13 ` Clem Cole
2017-04-20 20:17 ` Chet Ramey
2017-04-21 3:28 ` arnold
2017-04-21 3:43 ` Bakul Shah
2017-04-21 6:07 ` Steve Nickolas
2017-04-21 11:18 ` Clem cole
2017-04-21 13:20 ` Michael Kjörling
2017-04-18 20:56 ` Chet Ramey [this message]
2017-04-19 21:02 ` Sven Mascheck
2017-04-19 22:07 ` Steffen Nurpmeso
2017-04-20 0:31 ` shawn wilson
2017-04-20 0:35 ` shawn wilson
2017-04-20 3:50 ` Andy Kosela
2017-04-20 4:47 ` Warner Losh
2017-04-21 1:42 ` Nemo
2017-04-21 10:54 ` Ron Natalie
2017-04-21 14:22 ` Andy Kosela
2017-04-21 14:45 ` Ron Natalie
2017-04-22 2:46 ` Dave Horsfall
2017-04-20 16:39 ` Sven Mascheck
2017-04-20 21:42 ` Steffen Nurpmeso
2017-04-19 19:18 Doug McIlroy
2017-04-21 17:03 Doug McIlroy
2017-04-21 18:15 ` Clem Cole
2017-04-21 19:13 ` Steve Johnson
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