From: Konstantin Lepikhov <lakostis@elkatel.ru>
To: ALT Linux Sisyphus discussion list <sisyphus@altlinux.ru>
Subject: Re: [sisyphus] Что такое ||: ?
Date: Sat, 10 Apr 2004 21:34:55 +0400
Message-ID: <1081618495.4078303fb1db1@mail.elkatel.ru> (raw)
In-Reply-To: <200404100318.51450.iadzhubey@rics.bwh.harvard.edu>
Цитирую Ivan Adzhubey <iadzhubey@rics.bwh.harvard.edu>:
> Не откажите в помощи пожалуйста, никак не могу понять такую конструкцию в
> rc.sysinit:
>
> chgrp proc /proc >/dev/null 2>&1 ||:
>
> Что это за "или" с пустым оператором на конце строки? Зачем??
>
> Offtopic конечно, уж простите великодушно.
$ man bash
<skip>
SHELL BUILTIN COMMANDS
Unless otherwise noted, each builtin command documented in this section
as accepting options preceded by - accepts -- to signify the end of the
options.
: [arguments]
No effect; the command does nothing beyond expanding arguments
and performing any specified redirections. A zero exit code is
returned.
--
WBR, Konstantin A. Lepikhov
ELKATEL ISP Network Administrator
Tel./Fax: +7(095)7029116
http://www.elkatel.ru
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next prev parent reply other threads:[~2004-04-10 17:34 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-10 7:18 Ivan Adzhubey
2004-04-10 8:01 ` Sergey Vlasov
2004-04-10 17:34 ` Konstantin Lepikhov [this message]
2004-04-10 18:14 ` Ivan Adzhubey
2004-04-10 18:30 ` Konstantin Lepikhov
2004-04-10 20:07 ` Ivan Adzhubey
2004-04-11 11:23 ` Alexey Lubimov
2004-04-11 14:42 ` Dmitry V. Levin
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