From: Andrew Morton <akpm@linux-foundation•org>
To: Joe Perches <joe@perches•com>
Cc: Stephen Rothwell <sfr@canb•auug.org.au>,
Masahiro Yamada <yamada.masahiro@socionext•com>,
Randy Dunlap <rdunlap@infradead•org>,
Mark Brown <broonie@kernel•org>,
linux-fsdevel@vger•kernel.org,
Linux Kernel Mailing List <linux-kernel@vger•kernel.org>,
linux-mm@kvack•org,
Linux-Next Mailing List <linux-next@vger•kernel.org>,
mhocko@suse•cz, mm-commits@vger•kernel.org,
Michal Wajdeczko <michal.wajdeczko@intel•com>,
Daniel Vetter <daniel.vetter@ffwll•ch>,
Jani Nikula <jani.nikula@linux•intel.com>,
Joonas Lahtinen <joonas.lahtinen@linux•intel.com>,
Rodrigo Vivi <rodrigo.vivi@intel•com>,
Intel Graphics <intel-gfx@lists•freedesktop.org>,
DRI <dri-devel@lists•freedesktop.org>,
Chris Wilson <chris@chris-wilson•co.uk>
Subject: Re: mmotm 2019-07-04-15-01 uploaded (gpu/drm/i915/oa/)
Date: Thu, 4 Jul 2019 22:29:06 -0700 [thread overview]
Message-ID: <20190704222906.f817d02cb248561edd84a669@linux-foundation.org> (raw)
In-Reply-To: <5f4680cce78573ecfbbdc0dfca489710581b966f.camel@perches.com>
On Thu, 04 Jul 2019 22:22:41 -0700 Joe Perches <joe@perches•com> wrote:
> > So when comparing a zero-length file with a non-existent file, diff
> > produces no output.
>
> Why use the -N option ?
>
> $ diff --help
> [...]
> -N, --new-file treat absent files as empty
>
> otherwise
>
> $ cd $(mktemp -d -p .)
> $ touch x
> $ diff -u x y
> diff: y: No such file or directory
Without -N diff fails and exits with an error. -N does what's desired
as long as the non-missing file isn't empty.
next prev parent reply other threads:[~2019-07-05 5:29 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-04 22:01 mmotm 2019-07-04-15-01 uploaded akpm
2019-07-05 1:09 ` mmotm 2019-07-04-15-01 uploaded (gpu/drm/i915/oa/) Randy Dunlap
2019-07-05 1:19 ` Randy Dunlap
2019-07-05 3:05 ` Masahiro Yamada
2019-07-05 3:09 ` Masahiro Yamada
2019-07-05 3:23 ` Randy Dunlap
2019-07-05 3:44 ` Masahiro Yamada
2019-07-05 4:09 ` Randy Dunlap
2019-07-31 13:21 ` Jani Nikula
2019-07-05 3:14 ` Stephen Rothwell
2019-07-05 5:09 ` Andrew Morton
2019-07-05 5:22 ` Joe Perches
2019-07-05 5:29 ` Andrew Morton [this message]
2019-07-05 3:01 ` mmotm 2019-07-04-15-01 uploaded (mm/vmscan.c) Randy Dunlap
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