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Date: Thu, 07 Feb 2013 11:41:27 +0100
From: Armin Pirkovitsch <sperber@freebsd.org>
To: <mexas@bristol.ac.uk>
Subject: Re: [CFT+BRAINSTORM] One =?UTF-8?Q?USE=5F=20to=20rule=20them=20al?=
 =?UTF-8?Q?l?=
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On 2013-02-07 11:36, Anton Shterenlikht wrote:
> Date: Thu, 7 Feb 2013 10:52:01 +0100
> 	From: Baptiste Daroussin <bapt@FreeBSD.org>
> 	To: Alberto Villa <avilla@freebsd.org>
> 	Subject: Re: [CFT+BRAINSTORM] One USE_ to rule them all
>
> 	On Thu, Feb 07, 2013 at 09:54:59AM +0100, Alberto Villa wrote:
> 	> On Thursday 07 February 2013 06:32:54 Armin Pirkovitsch wrote:
> 	> > # find /usr/ports -name Makefile | xargs grep -R FEATURES | wc 
> -l
> 	> >       82
> 	> > # find /usr/ports -name Makefile | xargs grep -R USES | wc -l
> 	> >       20
> 	> >=20
> 	> > Sounds to me like there are less false positives for USES.
> 	>=20
> 	> Add -w and USES wins:
> 	> $ find /usr/ports -name Makefile | xargs grep -Rw FEATURES | wc -l
> 	>       37
> 	> $ find /usr/ports -name Makefile | xargs grep -Rw USES | wc -l
> 	>        0
>
> Is "-R" really needed in this case?
> I think there is no recursion as you
> already found all files. Anyway,
> I get the same answers with no "-R".

You are of course right - i just copied the grep and forgot to remove 
"-R" - when you give grep a specific file (which happens in this case) 
"-R" has no effect.

Armin