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From: Roman Perepelitsa <roman.perepelitsa@gmail.com>
To: Marc Chantreux <eiro@phear.org>
Cc: Anthony Fletcher <anthony@bifb.org>, Zsh Users <zsh-users@zsh.org>
Subject: Re: autoload variables
Date: Tue, 31 Aug 2021 23:03:39 +0200	[thread overview]
Message-ID: <CAN=4vMr9DiCejUiWeLfB6M29Jj4qb+kuKAuYR-n-X-riMqAVcQ@mail.gmail.com> (raw)
In-Reply-To: <YS6TI9eVkktkyvfJ@prometheus.u-strasbg.fr>

On Tue, Aug 31, 2021 at 10:38 PM Marc Chantreux <eiro@phear.org> wrote:
>
> besides: if the sed command is for real, i'm curious about
> how it works

The original sed command from the first email:

  sed -n -e '/^default/ s/^default.*dev //; s/ .*// p;q'

It's equivalent to this:

  head -1 | sed 's/^default.*dev //' | sed 's/ .*//'

In plain English:

  1. Take the first line.
  2. If a portion of the line matches '^default.*dev', remove it:
  3. If a portion of the line matches ' .*', remove it.

Roman.


  reply	other threads:[~2021-08-31 21:09 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-30 15:22 Anthony Fletcher
2021-08-30 15:41 ` Roman Perepelitsa
2021-08-30 16:40 ` René Neumann
2021-08-30 16:57   ` Anthony Fletcher
2021-08-30 19:30     ` Mikael Magnusson
2021-08-30 21:34     ` René Neumann
2021-08-30 21:46       ` Bart Schaefer
2021-08-31  0:10         ` Anthony Fletcher
2021-08-31 18:11           ` Roman Perepelitsa
2021-08-31 19:16             ` Bart Schaefer
2021-08-30 16:49 ` Bart Schaefer
2021-08-31 20:37 ` Marc Chantreux
2021-08-31 21:03   ` Roman Perepelitsa [this message]
2021-09-01  8:29     ` Marc Chantreux
2021-09-01  9:51       ` Roman Perepelitsa
2021-09-01 10:06         ` Marc Chantreux
2021-09-01 13:52           ` Bart Schaefer
2021-09-02 23:09         ` Anthony Fletcher
2021-09-03  0:07           ` Bart Schaefer
2021-09-03  6:52           ` Marc Chantreux

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