From: Larry McVoy <lm@mcvoy.com>
To: Peter Jeremy <peter@rulingia.com>
Cc: The Eunuchs Hysterical Society <tuhs@tuhs.org>
Subject: Re: [TUHS] [SPAM] Re: SCCS
Date: Fri, 13 Sep 2019 08:23:45 -0700 [thread overview]
Message-ID: <20190913152344.GW2046@mcvoy.com> (raw)
In-Reply-To: <20190913080009.GG88690@server.rulingia.com>
On Fri, Sep 13, 2019 at 06:00:09PM +1000, Peter Jeremy wrote:
> On 2019-Sep-13 15:54:32 +1000, Dave Horsfall <dave@horsfall.org> wrote:
> >On Thu, 12 Sep 2019, Larry McVoy wrote:
> >> But here is an SCCS win. SCCS has a 16 bit ignore the carry bit
> >> checksum over the whole file. RCS has none of that.
> >
> >Giggle... I found I could actually *edit* an SCCS file, provided I reset
> >the checksum to zero (it was then recalculated).
>
> I think that was deliberate. ISTR editing SCCS files and repairing the
> checksum as well, though I don't recally exactly how.
bk admin -z file.c
and I'm pretty sure that is sccs compat.
> >> B) NFS errors. So all NFS implementations, Suns included, had a bad
> >> habit of returning a block of nulls. I dunno why but that is a thing.
> >> The SCCS checksum would detect that. RCS and CVS did not have a
> >> checksum so when NFS returned garbage, they were happy to return that to
> >> you.
> >
> >I believe that NFS is much more reliable now (yes, it used to be awful).
>
> NFS ran much faster when you turned off the UDP checksums as well.
> (Though there was still the Ethernet CRC32).
Living dangerously.
next prev parent reply other threads:[~2019-09-13 15:24 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-09 6:25 [TUHS] PWB vs Unix/TS Warner Losh
2019-09-09 6:36 ` arnold
2019-09-10 15:16 ` Clem Cole
2019-09-11 0:28 ` Steve Johnson
2019-09-11 3:53 ` Warner Losh
2019-09-11 15:36 ` Clem Cole
2019-09-11 16:55 ` [TUHS] IBM Unix source licenses [was " Charles H Sauer
2019-09-12 19:31 ` Kevin Bowling
2019-09-12 20:59 ` Clem Cole
2019-09-12 21:09 ` [TUHS] IBM Unix source licenses - Series/1 NUXI Ronald Natalie
2019-09-12 21:31 ` [TUHS] IBM Unix source licenses [was Re: PWB vs Unix/TS Warner Losh
2019-09-12 22:30 ` jcs
2019-09-12 23:12 ` reed
2019-09-12 23:22 ` jcs
2019-09-12 23:29 ` [TUHS] IBM Unix source licenses Warren Toomey
2019-09-13 7:06 ` arnold
2019-09-13 8:30 ` SPC
2019-09-14 18:29 ` Warner Losh
2019-09-12 21:29 ` [TUHS] IBM Unix source licenses [was Re: PWB vs Unix/TS Charles H Sauer
2019-09-11 17:49 ` [TUHS] " Richard Salz
2019-09-11 17:52 ` ron
2019-09-11 21:44 ` Clem Cole
2019-09-11 18:11 ` Larry McVoy
2019-09-11 18:18 ` Richard Salz
2019-09-11 18:54 ` Larry McVoy
2019-09-11 21:05 ` Steve Johnson
2019-09-11 21:34 ` Steve Johnson
2019-09-11 21:57 ` Clem Cole
2019-09-11 22:50 ` Arthur Krewat
2019-09-11 21:59 ` Clem Cole
2019-09-11 21:50 ` Clem Cole
2019-09-11 22:49 ` Dave Horsfall
2019-09-12 3:43 ` [TUHS] SCCS Larry McVoy
2019-09-12 4:20 ` George Michaelson
2019-09-12 4:31 ` [TUHS] [SPAM] SCCS Larry McVoy
2019-09-12 13:44 ` Tony Finch
2019-09-13 4:11 ` Larry McVoy
2019-09-13 5:54 ` Dave Horsfall
2019-09-13 8:00 ` Peter Jeremy
2019-09-13 15:23 ` Larry McVoy [this message]
2019-09-13 21:36 ` Dave Horsfall
2019-09-12 4:28 ` [TUHS] SCCS Jon Forrest
2019-09-12 4:33 ` Larry McVoy
2019-09-12 6:12 ` William Corcoran
2019-09-12 14:35 ` Clem Cole
2019-09-13 5:22 ` Dave Horsfall
2019-09-13 5:50 ` Bakul Shah
2019-09-12 16:45 ` Eric Allman
2019-09-12 17:29 ` Clem Cole
2019-09-12 17:47 ` Warner Losh
2019-09-13 8:12 ` emanuel stiebler
2019-09-13 21:11 ` Steffen Nurpmeso
2019-09-13 21:17 ` Larry McVoy
2019-09-13 21:48 ` Bakul Shah
2019-09-13 23:12 ` Steffen Nurpmeso
2019-09-13 23:03 ` Steffen Nurpmeso
2019-09-14 1:55 ` [TUHS] [SPAM] SCCS Larry McVoy
2019-09-16 17:23 ` [TUHS] SCCS Steffen Nurpmeso
2019-09-16 20:31 ` Larry McVoy
2019-09-17 17:57 ` Steffen Nurpmeso
2019-09-18 8:48 ` Eric Allman
2019-09-18 17:33 ` Steffen Nurpmeso
2019-09-12 20:07 ` Nemo
2019-09-11 16:05 ` [TUHS] PWB vs Unix/TS Paul Winalski
2019-09-11 17:14 ` ron
2019-09-14 0:44 ` [TUHS] a book (was Re: PWB vs Unix/TS) reed
2019-09-14 2:53 ` Warner Losh
2019-09-15 2:18 ` Jon Steinhart
2019-09-15 2:39 ` Clem Cole
2019-09-15 3:24 ` Adam Thornton
2019-09-14 22:46 ` Clem cole
2019-09-15 0:58 ` Adam Thornton
2019-09-15 3:30 ` Eric Allman
2019-09-15 4:21 ` Larry McVoy
2019-09-15 5:17 ` Jon Steinhart
2019-09-15 20:14 ` Clem Cole
2019-09-15 20:21 ` Jon Steinhart
2019-09-15 20:12 ` Clem Cole
2019-09-15 21:28 ` Dave Horsfall
2019-09-15 23:27 ` Clem cole
2019-09-15 23:45 ` Richard Salz
2019-09-15 7:43 ` Andy Kosela
2019-09-13 22:01 [TUHS] [SPAM] Re: SCCS Norman Wilson
2019-09-13 22:30 ` Dave Horsfall
2019-09-16 10:59 ` Tony Finch
2019-09-16 12:11 ` Leah Neukirchen
2019-09-16 21:45 ` Dave Horsfall
2019-09-16 22:21 ` George Michaelson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190913152344.GW2046@mcvoy.com \
--to=lm@mcvoy.com \
--cc=peter@rulingia.com \
--cc=tuhs@tuhs.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).