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Re: setvalue builtin command
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From: |
Chet Ramey |
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Subject: |
Re: setvalue builtin command |
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Date: |
Mon, 08 Apr 2013 10:32:40 -0400 |
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User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:17.0) Gecko/20130307 Thunderbird/17.0.4 |
On 4/8/13 9:05 AM, Greg Wooledge wrote:
> If the upstream
> variable has a value assigned, then you can; but if it's empty, then you
> can't.
One clarification: a variable is unset unless it has had a value assigned.
There might be some placeholder there with some type information, but the
variable is unset. There might be some inconsistencies in how bash treats
such variables, and I can fix those, but the above is how it's supposed
to be.
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU chet@case.edu http://cnswww.cns.cwru.edu/~chet/