Date: Wed, 25 Apr 2001 20:37:24 +0100 From: Brian Somers <brian@Awfulhak.org> To: Garance A Drosihn <drosih@rpi.edu> Cc: "John W. De Boskey" <jwd@bsdwins.com>, "David O'Brien" <freebsd-current@FreeBSD.ORG>, Brian Somers <brian@Awfulhak.org>, brian@Awfulhak.org Subject: Re: Updated: cp -t patch (w/ commentary) Message-ID: <200104251937.f3PJbOM03513@hak.lan.Awfulhak.org> In-Reply-To: Message from Garance A Drosihn <drosih@rpi.edu> of "Wed, 25 Apr 2001 14:32:04 EDT." <p05100c03b70ca78af686@[128.113.24.47]>
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> It is inconceivable that the proposed patch to 'xargs' would
> increase your running time. I don't mean the standard '-I'
> change, which would certainly destroy performance, but the
> proposed patch to 'xargs' which solves your specific problem
> in a general way.
>
> I'm still curious as to why you think the proposed change to
> xargs will cause you ANY performance problem. I simply can
> not imagine where you would get a performance problem from
> the -Y idea (though I'm still tempted to change the letter
> for that proposed option).
I suspect that the bulk of the readers of this thread weren't paying
attention.
To summarise, the actual patch that Dima wrote made
blah | xargs -Y {} cp {} somedir
work as expected, replacing {} with as much of stdin as will fit.
It was then suggested that
#! /bin/sh
cmd=$1
last=$2
shift 2
exec "$cmd" "$@" "$last"
would solve the problem and the only argument against it was that ENV
could corrupt the script and induce an E2BIG. I didn't consider that
argument strong enough, so I stepped out - that's why I'm not writing
this email.
> --
> Garance Alistair Drosehn = gad@eclipse.acs.rpi.edu
> Senior Systems Programmer or gad@freebsd.org
> Rensselaer Polytechnic Institute or drosih@rpi.edu
--
Brian <brian@Awfulhak.org> <brian@[uk.]FreeBSD.org>
<http://www.Awfulhak.org>; <brian@[uk.]OpenBSD.org>
Don't _EVER_ lose your sense of humour !
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