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From: Larry McVoy <lm@mcvoy.com>
To: Rob Pike <robpike@gmail.com>
Cc: The Eunuchs Hysterical Society <tuhs@tuhs.org>
Subject: Re: [TUHS] The UNIX Command Language (1976)
Date: Thu, 3 Dec 2020 16:48:59 -0800	[thread overview]
Message-ID: <20201204004859.GZ19746@mcvoy.com> (raw)
In-Reply-To: <CAKzdPgzHN7U58FqXLFTsFQaZUGPEBPAHFjyrpOQGDnM5L0wiqA@mail.gmail.com>

I should have done

	cat file file2 file3 ^ wc -l

since the redirect works with only one file.

On Fri, Dec 04, 2020 at 11:43:52AM +1100, Rob Pike wrote:
> I've long been fascinated by the prevalence of
> 
>    cat file | process
> 
> and think of it as a sort of triumph of the model. Pipes are more natural
> than redirection as a human interface.
> 
> -rob
> 
> 
> On Fri, Dec 4, 2020 at 11:30 AM Dave Horsfall <dave@horsfall.org> wrote:
> 
> > On Thu, 3 Dec 2020, Larry McVoy wrote:
> >
> > > Wasn't there a version that was
> > >
> > >       cat whatever ^ wc -l
> >
> > Sort of pipe-related, but one thing that really gets my goat is the
> > inefficient redundancy in "cat file | process" when "process < file" will
> > suffice (and I'll bet that I'm not alone).
> >
> > And yes, "^" preceded "|" for reasons discussed later in this thread.
> >
> > -- Dave
> >

-- 
---
Larry McVoy            	     lm at mcvoy.com             http://www.mcvoy.com/lm 

  reply	other threads:[~2020-12-04  0:49 UTC|newest]

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CAKH6PiWA2uN4m0AGp7VRJTQ6XXDLJQweHoHjx2wN=zQYs1onpA@mail.gmail.com>
2020-12-03 20:31 ` M Douglas McIlroy
2020-12-03 20:37   ` Niklas Karlsson
2020-12-03 20:43     ` Larry McVoy
2020-12-03 20:56       ` Ralph Corderoy
2020-12-03 21:01       ` Ben Walton
2020-12-03 21:12       ` Clem Cole
2020-12-04  0:29       ` Dave Horsfall
2020-12-04  0:43         ` Rob Pike
2020-12-04  0:48           ` Larry McVoy [this message]
2020-12-04  1:25           ` Dan Cross
2020-12-04  9:27             ` arnold
2020-12-04 11:33               ` Andy Kosela
2020-12-04 13:14                 ` Tyler Adams
2020-12-04 13:17                   ` Niklas Karlsson
2020-12-04 13:22                     ` Tyler Adams
2020-12-04 13:25                       ` Niklas Karlsson
2020-12-04  0:45         ` George Michaelson
2020-12-04  1:10         ` Bakul Shah
2020-12-04  1:17           ` George Michaelson
2020-12-03 20:51     ` M Douglas McIlroy
2020-12-01  3:13 Norman Wilson
2020-12-02  0:31 ` George Michaelson
2020-12-02  1:06   ` Adam Thornton
2020-12-02 17:02     ` John Cowan
     [not found] <CAMP=X_mO9oawUpHGOvgVtwVTgcmvdXAc5vrE_+s3d2NsH+1HgA@mail.gmail.com>
2020-12-01  0:00 ` Joachim via TUHS
2020-12-01  0:21   ` Dave Horsfall
2020-12-01  2:23     ` Larry McVoy
  -- strict thread matches above, loose matches on Subject: below --
2020-11-30  3:10 Joachim via TUHS
2020-11-30  8:30 ` Thomas Paulsen
2020-11-30 13:36 ` Brantley Coile
2020-11-30 15:12   ` Tom Ivar Helbekkmo via TUHS
2020-11-30 15:52 ` Clem Cole
2020-11-30 16:25   ` Dan Cross
2020-11-30 16:38     ` Warner Losh
2020-11-30 16:41       ` Dan Cross
2020-11-30 16:37   ` Larry McVoy
2020-11-30 16:54     ` Clem Cole
2020-11-30 18:13       ` Theodore Y. Ts'o
2020-11-30 18:25       ` John Cowan
2020-11-30 18:37         ` Clem Cole
2020-11-30 20:11           ` arnold
2020-11-30 21:49             ` Will Senn
2020-12-01  2:55             ` Jon Steinhart
2020-11-30 18:46         ` Nemo Nusquam
2020-12-01  3:59 ` jason-tuhs
2020-12-01  4:03   ` Jon Steinhart
2020-12-01  9:27   ` Steve Nickolas
2020-12-01 15:09   ` Jim Capp
2020-12-01 15:35     ` Toby Thain
2020-12-01 15:38     ` arnold
2020-12-01 16:24       ` Warner Losh
2020-12-01 16:39         ` arnold
2020-12-01 20:13           ` Rob Pike
2020-12-02  7:08             ` arnold
2020-12-02  7:29               ` Rob Pike
2020-12-01 20:20           ` Steffen Nurpmeso
2020-12-01 20:39             ` Bakul Shah
2020-12-01 21:24               ` Dan Cross
2020-12-01 23:44                 ` John Cowan
2020-12-12 19:50           ` scj
2020-12-01 16:47         ` Larry McVoy
2020-12-01 20:13     ` Dave Horsfall
2020-12-01 20:49       ` John Cowan
2020-12-01 16:04 ` Tyler Adams

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