From: Anthony Fletcher <anthony@bifb.org>
To: Roman Perepelitsa <roman.perepelitsa@gmail.com>
Cc: Marc Chantreux <eiro@phear.org>, Zsh Users <zsh-users@zsh.org>
Subject: Re: autoload variables
Date: Thu, 2 Sep 2021 19:09:50 -0400 [thread overview]
Message-ID: <YTFZvrv6O8HBW3R6@teapot.bifb.org> (raw)
In-Reply-To: <CAN=4vMpQRnfTcRZHcz1+=PQ8VMOfTBvoKPSNC8-9cRwqDeYM6Q@mail.gmail.com>
On 01 Sep 2021 at 11:51:30, Roman Perepelitsa wrote:
> On Wed, Sep 1, 2021 at 10:30 AM Marc Chantreux <eiro@phear.org> wrote:
> >
> > Hi Roman,
> >
> > Le Tue, Aug 31, 2021 at 11:03:39PM +0200, Roman Perepelitsa a écrit :
> > > sed -n -e '/^default/ s/^default.*dev //; s/ .*// p;q'
> >
> > > In plain English:
> >
> > english is fine. can you confirm that '/^default/ s/^default.*dev //'
> > is a suttered way to say 's/^default.*dev //' ?
>
> Yes, these are equivalent. Anything that matches '^default.*dev '
> matches '^default'.
Yes but the point is I am only interested in lines that start with
'default via'. I am ignoring all the other lines. Without the initial
match /^default/ all the other lines are processed by the
substitutions and I get the wrong interface.
> > that's what i was afraid about. does ip r garanty that?
>
> I don't know. FWIW, I'd do it like this:
>
> ip -j -4 r | jq -r '.[] | select(.dst == "default") | .dev'
>
> This requires a new-enough version of ip to support json output.
Cool - I didn't know JSON output was an option. Not that jq is much less
baroque than sed. I think this is better than my sed script.
One point in favour of sed - it's then on all systems, jq isn't.
Sorry for the off-topic discussion.
Anthony.
next prev parent reply other threads:[~2021-09-02 23:10 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
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 [this message]
2021-09-03 0:07 ` Bart Schaefer
2021-09-03 6:52 ` Marc Chantreux
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=YTFZvrv6O8HBW3R6@teapot.bifb.org \
--to=anthony@bifb.org \
--cc=eiro@phear.org \
--cc=roman.perepelitsa@gmail.com \
--cc=zsh-users@zsh.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.
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/zsh/
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).