From: J William Piggott <elseifthen@gmx.com>
To: Alexey Galakhov <agalakhov@gmail.com>
Cc: Karel Zak <kzak@redhat.com>, util-linux@vger.kernel.org
Subject: Re: [PATCH] hwclock: flush stdout in hwclock -c
Date: Tue, 28 Apr 2015 07:27:03 -0400 [thread overview]
Message-ID: <553F6E87.8030303@gmx.com> (raw)
In-Reply-To: <20150427234218.587e5435.agalakhov@gmail.com>
On 04/27/2015 05:42 PM, Alexey Galakhov wrote:
> On Mon, 27 Apr 2015 17:27:07 -0400
> J William Piggott <elseifthen@gmx.com> wrote:
>
>> I do not understand what this patch accomplishes. stdout is line
>> buffered. All of hwclock -c output ends with \n, which flushes
>> the buffer. Then we flush it again with fflush? What am I missing?
>
> stdout is line buffered only if it is not redirected.
Thanks for the explanation, I wasn't aware of that.
> Using the pipe
> symbol in shell to redirect the output i.e. to awk results in not
> flushing the buffer until it's full.
>
> A quick test:
> $ hwclock -c | cat
>
>
> Regards,
> Alexey
>
prev parent reply other threads:[~2015-04-28 11:27 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-16 15:26 [PATCH] hwclock: flush stdout in hwclock -c Alexey Galakhov
2015-04-20 0:34 ` J William Piggott
2015-04-20 7:28 ` Alexey Galakhov
2015-04-21 15:19 ` J William Piggott
2015-04-21 15:50 ` Alexey Galakhov
2015-04-21 19:12 ` J William Piggott
2015-04-27 8:27 ` Karel Zak
2015-04-27 21:27 ` J William Piggott
2015-04-27 21:42 ` Alexey Galakhov
2015-04-28 6:50 ` Bernhard Voelker
2015-04-28 11:27 ` J William Piggott [this message]
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