From: Led <ledest@gmail.com>
To: ALT Linux sysadmin discuss <sysadmins@lists.altlinux.org>
Subject: Re: [Sysadmins] странности с grep
Date: Fri, 17 Jul 2009 14:20:50 +0300
Message-ID: <200907171420.50757.ledest@gmail.com> (raw)
In-Reply-To: <200907171348.20249.victor@cas.ru>
On Friday 17 July 2009 12:48:20 Victor Sinyawsky wrote:
> Пытаюсь просмотреть файл без отображения комментов.
> Шаблон: '^[ \t]*#'
> (начинается с 0 или более пробелов или табов, за которыми следует символ #)
> Проверяем. Строка должна совпасть с шаблоном, а значит не отобразиться
> (grep с параметром -v)
> ~%=> echo "\t#comment" | grep -v '^[ \t]*#' | wc -c
> 10
> Не работает.
> Меняем таб на пробел:
> ~%=> echo " #comment" | grep -v '^[ ]*\#' |wc -c
> 0
> Работает!
> А вот awk правильно работает:
> echo "\t#comment" | awk '!/^[ \t]*\#/{print}'|wc -c
> 0
> (аналогично греповскому '-v' перед шаблоном отрицание '!')
>
> Или я что-то не понимаю или одно из двух :)
grep -v '^[[:blank:]]*#'
--
Led
prev parent reply other threads:[~2009-07-17 11:20 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-17 9:48 Victor Sinyawsky
2009-07-17 9:55 ` Max Ivanov
2009-07-17 10:38 ` Victor Sinyawsky
2009-07-17 11:43 ` Kharitonov A. Dmitry
2009-07-17 11:55 ` Victor Sinyawsky
2009-07-17 12:02 ` Kharitonov A. Dmitry
2009-07-17 9:56 ` Dmitry V. Levin
2009-07-17 10:09 ` Kharitonov A. Dmitry
2009-07-17 10:55 ` Victor Sinyawsky
2009-07-17 11:20 ` Rinat Bikov
2009-07-17 11:25 ` Led
2009-07-24 20:02 ` [Sysadmins] [JT] " Michael Shigorin
2009-07-25 0:15 ` [Sysadmins] " Mykola S. Grechukh
2009-07-25 7:18 ` Michael Shigorin
2009-07-28 20:13 ` [Sysadmins] [JT] " Kharitonov A. Dmitry
2009-07-17 11:36 ` [Sysadmins] " Kharitonov A. Dmitry
2009-07-17 11:20 ` Led [this message]
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=200907171420.50757.ledest@gmail.com \
--to=ledest@gmail.com \
--cc=sysadmins@lists.altlinux.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
ALT Linux sysadmins discussion
This inbox may be cloned and mirrored by anyone:
git clone --mirror http://lore.altlinux.org/sysadmins/0 sysadmins/git/0.git
# If you have public-inbox 1.1+ installed, you may
# initialize and index your mirror using the following commands:
public-inbox-init -V2 sysadmins sysadmins/ http://lore.altlinux.org/sysadmins \
sysadmins@lists.altlinux.org sysadmins@lists.altlinux.ru sysadmins@lists.altlinux.com
public-inbox-index sysadmins
Example config snippet for mirrors.
Newsgroup available over NNTP:
nntp://lore.altlinux.org/org.altlinux.lists.sysadmins
AGPL code for this site: git clone https://public-inbox.org/public-inbox.git