Date: Sun, 20 Feb 2011 16:37:46 +0100 From: Jeremie Le Hen <jeremie@le-hen.org> To: "Matthew D. Fuller" <fullermd@over-yonder.net> Cc: freebsd-current@FreeBSD.org, Jeremie Le Hen <jeremie@le-hen.org> Subject: Re: [RFC] Force stdio output streams to line-buffered mode Message-ID: <20110220153746.GB6573@felucia.tataz.chchile.org> In-Reply-To: <20110219203729.GE27891@over-yonder.net> References: <20110219185043.GA6573@felucia.tataz.chchile.org> <20110219203729.GE27891@over-yonder.net>
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On Sat, Feb 19, 2011 at 02:37:29PM -0600, Matthew D. Fuller wrote: > On Sat, Feb 19, 2011 at 07:50:43PM +0100 I heard the voice of > Jeremie Le Hen, and lo! it spake thus: > > > > I've attached a small patch for stdio, so if the environment variable > > STDIO_IOLBF is set, the output streams will be line-oriented by default. > > iostat -x 1 | env STDIO_IOLBF=1 grep -v ad10 | cat -n > > I've no real comment on anything else (sounds like an interesting > hack, whatever else), but just for this particular case, you know that > grep has a --line-buffered arg, right? Yes indeed, my example wasn't especially smart :). Actually, I often stumble on this problem with an awk script I use to columize output. -- Jeremie Le Hen Humans are born free and equal. But some are more equal than others. Coluche
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