From: Michael Shigorin <mike@osdn.org.ua>
To: ALT Linux sysadmin discuss <sysadmins@lists.altlinux.org>
Cc: community@lists.altlinux.org
Subject: Re: [Sysadmins] странности с grep
Date: Sat, 25 Jul 2009 10:18:44 +0300
Message-ID: <20090725071844.GD28191@osdn.org.ua> (raw)
In-Reply-To: <a4ab440f0907241715w61724935k100d685d173707a2@mail.gmail.com>
On Sat, Jul 25, 2009 at 03:15:06AM +0300, Mykola S. Grechukh wrote:
> >> > Например, для того, чтобы убрать строки с комментариями и
> >> > пустые строки можно применить последовательно два grep:
> >> > $ grep -v '^[[:space:]]#' | grep -v '^$'
> grep '^[^#]'
А что, изящно, спасибо.
Хорошая иллюстрация смены подхода вместо долбления в лоб:
пустая строка -- это не только ^$, а и _не_ любой символ.
PS: даю кросспост в community@, надеюсь, там тоже оценят.
Просьба отвечать в ту рассылку, где прочитали (if ever).
--
---- WBR, Michael Shigorin <mike@altlinux.ru>
------ Linux.Kiev http://www.linux.kiev.ua/
next prev parent reply other threads:[~2009-07-25 7:18 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 [this message]
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
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