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Re: test -n "${var+set}"?
From: |
Derek Robert Price |
Subject: |
Re: test -n "${var+set}"? |
Date: |
Wed, 18 Feb 2004 15:24:51 -0500 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 |
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Larry Jones wrote:
>Derek Robert Price writes:
>
>>Got it now. I read the bash man page as stating that this construct
>>wouldn't echo "set" for a variable set to the empty string.
>
>
>That's because the man page is talking about :+ rather than +:
>
> When not performing substring expansion, bash tests for a
> parameter that is unset or null; omitting the colon results in a
> test only for a parameter that is unset.
I see it now. Thanks. :)
Derek
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