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Re: Bash style of if-then-else?


From: Pierre Gaston
Subject: Re: Bash style of if-then-else?
Date: Tue, 24 Aug 2010 10:28:57 +0300

On Tue, Aug 24, 2010 at 10:25 AM, Joachim Schmitz
<address@hidden> wrote:
> Chris F.A. Johnson wrote:
>>
>> On Mon, 23 Aug 2010, Dennis Williamson wrote:
>>
>>> If you're writing a Bash-specific script then it's preferable to use
>>> double square brackets (see http://mywiki.wooledge.org/BashFAQ/031).
>>>
>>> if [[ -f $file ]]
>>> then
>>>   do something
>>> fi
>>
>>   I'd avoid non-portable syntax unless it offers a significant
>>   advantage over standard syntax.
>>
>>   [[ ... ]] is not standard, and offers little over the standard
>>   syntax.
>
> [[ ... ]] is POSIX, isn't it? As such there should be enough portability and
> standard syntax to warrant the advantage.
>
[[ ]] is reserved but not specified.



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