linux-kernel - Re: [PATCH 2/5] kbuild: fix warning when domainname is not available

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Date:	Sun, 13 Sep 2009 17:58:20 -0400
From:	Mike Frysinger <vapier.adi@...il.com>
To:	Felipe Contreras <felipe.contreras@...il.com>
Cc:	linux-kernel@...r.kernel.org, Sam Ravnborg <sam@...nborg.org>
Subject: Re: [PATCH 2/5] kbuild: fix warning when domainname is not available

.
On Sun, Sep 13, 2009 at 17:42, Felipe Contreras
<felipe.contreras@...il.com> wrote:
> On Mon, Sep 14, 2009 at 12:12 AM, Mike Frysinger <vapier.adi@...il.com> wrote:
>> On Sun, Sep 13, 2009 at 15:38, Felipe Contreras wrote:
>>> +  if $domain; then
>>
>> is this really correct ?  i think you meant to use:
>> [ -n "$domain" ]
>
> What is the difference?
>
> $domain unset
> test -n "" -> false
> test -> false
>
> $domain is a valid string
> test -n "string" -> true
> test "string" -> true

except that you didnt invoke `test` anywhere.  you're executing the
contents of $domain.
-mike
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