From: Larry McVoy <lm@mcvoy.com>
To: Michael Usher <musher@ucsc.edu>
Cc: TUHS main list <tuhs@minnie.tuhs.org>
Subject: Re: [TUHS] Remember the ed thread?
Date: Mon, 29 Mar 2021 13:55:59 -0700 [thread overview]
Message-ID: <20210329205559.GI4209@mcvoy.com> (raw)
In-Reply-To: <4B1F03CA-6387-4FE1-8116-0CB7B5175DE7@ucsc.edu>
My high school had some computer, don't remember what, may have been a
PDP 11. The *only* terminal was a line printer, probably a DECwriter,
don't remember. I do remember it being about 130 columns.
I don't remember if it was the real ed or a clone, but the editor was
very similar to ed(1). And yes, it's the only way to go with a printer
console.
On Mon, Mar 29, 2021 at 01:50:55PM -0700, Michael Usher wrote:
> I think you can only truly appreciate ed when you were forced to use a DECwriter as your terminal because all the VT100s were in use. (Undergrad student lab)
>
>
> ???
> Michael Usher
> Network Operations Manager
> University of California, Santa Cruz
> musher@ucsc.edu 831-459-3697
>
> > On Mar 29, 2021, at 12:50 PM, Rob Pike <robpike@gmail.com> wrote:
> >
> > Ed is the standard editor.
> >
> > -rob
> >
> >
> > On Tue, Mar 30, 2021 at 1:36 AM Larry McVoy <lm@mcvoy.com <mailto:lm@mcvoy.com>> wrote:
> > I had *.clients.your-server.de <http://clients.your-server.de/> crawling mcvoy.com <http://mcvoy.com/> in violation of my
> > robots.txt. For whatever reason, the tty settings (or something)
> > made vi not work, I dunno what the deal is, stty -tabs didn't help.
> >
> > So I had to resort to ed to write and debug the little program below.
> > It was surprisingly pleasant, it's probably the first time I've used ed
> > for anything real in at least a decade. My fingers still know it.
> >
> > +1 for ed. It's how many decades old and still useful?
> >
> >
> > #!/usr/libexec/bitkeeper/bk tclsh
> >
> > int
> > main(void)
> > {
> > FILE log = popen("/var/log/apache2/dns.l", "r");
> > string buf, ip;
> > string dropped{string};
> >
> > fconfigure(log, buffering: "line");
> > while (buf = <log>) {
> > unless (buf =~ /([^ ]+\.your-server\.de\.) /) continue;
> > ip = $1;
> > if (defined(dropped{ip})) continue;
> > dropped{ip} = "yes";
> > warn("DROP ${ip}\n");
> > system("/sbin/iptables -I INPUT -s ${ip} -j DROP");
> > }
> > }
>
--
---
Larry McVoy lm at mcvoy.com http://www.mcvoy.com/lm
next prev parent reply other threads:[~2021-03-29 20:56 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-29 14:34 Larry McVoy
2021-03-29 15:09 ` Anders Damsgaard
2021-03-29 15:26 ` Brantley Coile
2021-03-29 15:36 ` Mark van Atten
2021-03-29 15:43 ` Brantley Coile
2021-03-29 15:52 ` Mark van Atten
2021-03-29 15:45 ` Andy Kosela
2021-03-29 15:51 ` Clem Cole
2021-03-29 17:22 ` arnold
[not found] ` <CALMnNGgWrFRjXk5N4PgTj0_Yw3W5nCR2=CYSASM6dnqTooy8Dw@mail.gmail.com>
2021-03-30 8:53 ` arnold
2021-03-29 15:37 ` Clem Cole
2021-03-29 15:42 ` Anders Damsgaard
2021-03-29 15:49 ` Larry McVoy
2021-03-29 16:01 ` Andy Kosela
2021-03-29 18:12 ` Tom Ivar Helbekkmo via TUHS
2021-03-29 16:20 ` Steve Nickolas
2021-03-29 19:50 ` Rob Pike
2021-03-29 20:50 ` Michael Usher via TUHS
2021-03-29 20:55 ` Larry McVoy [this message]
2021-03-29 21:10 ` Erik E. Fair
2021-03-29 21:14 ` Larry McVoy
2021-03-29 21:53 ` Clem Cole
2021-03-29 22:29 ` John P. Linderman
2021-03-30 4:30 ` Rob Pike
2021-03-30 7:37 ` Harald Arnesen
2021-03-30 15:00 ` Kenneth Goodwin
2021-03-29 15:58 Norman Wilson
2021-03-30 0:11 ` John Cowan
2021-03-29 23:21 M Douglas McIlroy
2021-03-30 3:39 ` Rich Morin
[not found] <CAKH6PiXmR6Jv0bkyOtHuk1ZLV64aeW7bnQkUnzV9-G_JaUVDAA@mail.gmail.com>
2021-03-30 23:38 ` John Cowan
2021-03-31 2:34 ` Bakul Shah
2021-03-31 0:54 Norman Wilson
2021-03-31 1:29 ` John Cowan
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