Date: Fri, 12 Dec 2008 18:12:43 +0400 From: rihad <rihad@mail.ru> To: Christoph Mallon <christoph.mallon@gmx.de> Cc: freebsd-hackers@freebsd.org Subject: Re: preventing FIFO from EOF Message-ID: <4942715B.7090509@mail.ru> In-Reply-To: <49426C40.6050802@gmx.de> References: <494235CA.2050101@mail.ru> <49426C40.6050802@gmx.de>
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Christoph Mallon wrote: > rihad schrieb: > Something as simple as this: > $ sh < /dev/null > /var/tmp/kick 2>/dev/null > seems to block indefinitely, but exits as soon as I run > $ buffer -i /var/tmp/foo > (and buffer exits too) Strangely enough, something as stupid as this does the trick: sh < /dev/stdout > /var/tmp/kick 2>/dev/null i.e. reading from stdout blocks. Now sh keeps buffer block on /var/tmp/kick and never exit ;) I'm not sure what this does or why and how it works Unix-wise.
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