Date: Mon, 10 Jun 2013 14:03:10 -0500 From: Tim Daneliuk <tundra@tundraware.com> To: lconrad@go2france.com Cc: freebsd-questions@freebsd.org Subject: Re: Bourne shell "if" syntax Message-ID: <51B622EE.2090002@tundraware.com> In-Reply-To: <51b620a6.42f.2b6a6400.5605dcf0@go2france.com> References: <51b620a6.42f.2b6a6400.5605dcf0@go2france.com>
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On 06/10/2013 01:53 PM, lconrad@go2france.com wrote:
>
>
> script fragment:
>
> PTR=`dig @some.dns +short +norec -x a.b.c.d`
>
> echo "$PTR"
>
> if [ "$PTR" == "" ] ; then
>
> echo "$PTR" >> /path/to/PTR_absent.txt
>
> fi
>
> ===========
>
> output for an IP:
>
>
> a-b-c-d.domain.net.
> [: a-b-c-d.domain.net.: unexpected operator
>
Try this instead and see if this fixes it:
if [ _"$PTR" == _ ] ; then
-----------------------------------------------------------------------
Tim Daneliuk
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