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From: "Dmitry V. Levin" <ldv@alt-linux.org>
To: ALT Linux Spring mailing list <mandrake-russian@altlinux.ru>
Subject: Re: [mdk-re] скрипт для сортировки passwd и group
Date: Thu Dec 13 13:18:00 2001
Message-ID: <20011213102056.GB11962@ldv.office.alt-linux.org> (raw)
In-Reply-To: <15592951847.20011211194731@e-foto.ru>

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On Tue, Dec 11, 2001 at 07:47:31PM +0300, Maxim wrote:
> GM>     max> люди, может кто имеет subj Не хочется писать, а очень хочется такую
> GM>     max> штуку.  Когда пользователей разрастается, то уже сложно искать
> GM>     max> становится.
> 
> GM> cat /etc/passwd | sort
> 
> Все гениальное просто! :)
> 
> только:
> 
> cat /etc/passwd | sort >passwd
> 
> по моему будет лучше. По крайней мере на всегда.

Это называется "race condition".

Если Вам (с довольно высокой вероятностью) не повезет, то в passwd
окажется вовсе не то, что Вы ожидали там увидеть.


Regards,
	Dmitry

+-------------------------------------------------------------------------+
Dmitry V. Levin     mailto://ldv@alt-linux.org
ALT Linux Team      http://www.altlinux.ru/
Fandra Project      http://www.fandra.org/
+-------------------------------------------------------------------------+
UNIX is user friendly. It's just very selective about who its friends are.

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  parent reply	other threads:[~2001-12-13 13:18 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-12-11 19:23 [mdk-re] [JT] " Maxim
2001-12-11 19:31 ` Grigory Milev
2001-12-11 19:47   ` [mdk-re] " Maxim
2001-12-11 19:54     ` Vyt
2001-12-11 21:32       ` Maxim
2001-12-11 21:36         ` [mdk-re] Re: [JT] " Vyt
2001-12-13 11:06       ` [mdk-re] " Artem K. Jouravsky
2001-12-13 13:18     ` Dmitry V. Levin [this message]
2001-12-11 19:54   ` [mdk-re] [JT] " Maxim
2001-12-11 20:36     ` Kachalov Anton
2001-12-13 11:08     ` Artem K. Jouravsky
2001-12-12  2:02 ` [mdk-re] " Mikhail Zabaluev

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