From: Alexey Rusakov <ktirf@altlinux.ru>
To: ALT Devel discussion list <devel@altlinux.ru>
Subject: Re: [devel] Код возврата при конвейере
Date: Sun, 06 Mar 2005 20:39:13 +0300
Message-ID: <422B4041.5000106@altlinux.ru> (raw)
In-Reply-To: <20050306171404.GA9530@basalt.office.altlinux.org>
Dmitry V. Levin wrote:
>Hi,
>
>On Sun, Mar 06, 2005 at 02:15:40PM +0300, Vitaly Lipatov wrote:
>
>
>>Не могу понять, как узнать код возврата
>>программы при такой конструкции:
>>
>>программа | tea
>>
>>Подскажите пожалуйста.
>>
>>
>
>Кодом возврата pipeline'а является код возврата последней команды,
>поэтому узнать код возврата других команд можно, например, так:
>
>rm -f failed
>(программа || touch failed) | tea
>if [ -f failed ]; then
> обработка ошибки
>fi
>
>
При условии, что не требуется вывод tea писать в переменную, можно написать
RETVAL=`{ (программа ; echo $? >&5) | tea } 5>&1`
if [ $RETVAL ... ]; then
...
fi
Более громоздко, зато не требует наличия файловой системы вообще :)
--
Alexey "Ktirf" Rusakov
next prev parent reply other threads:[~2005-03-06 17:39 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-06 11:15 Vitaly Lipatov
2005-03-06 17:14 ` Dmitry V. Levin
2005-03-06 17:39 ` Alexey Rusakov [this message]
2005-03-06 17:53 ` Alexey I. Froloff
2005-03-07 12:13 ` Alexey Rusakov
2005-03-08 16:18 ` Alexey I. Froloff
2005-03-08 17:34 ` Alexey Rusakov
2005-03-08 20:03 ` Alexey I. Froloff
2005-03-08 20:09 ` Alexey I. Froloff
2005-03-08 20:35 ` [devel] [JT] " Alexey Rusakov
2005-03-08 21:51 ` [devel] " Dmitry V. Levin
2005-03-09 9:13 ` [devel] " Michael Shigorin
2005-03-10 6:18 ` Alexey Tourbin
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