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Re: What shells fail to work if comparing with "" ?
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From: |
Ralf Wildenhues |
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Subject: |
Re: What shells fail to work if comparing with "" ? |
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Date: |
Thu, 10 Feb 2011 20:40:39 +0100 |
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User-agent: |
Mutt/1.5.20 (2010-08-04) |
Hello David,
* Dr. David Kirkby wrote on Thu, Feb 10, 2011 at 07:56:24PM CET:
> I know its considered bad practice to check for an empty string with
> something like:
>
> if [ "$STR" = "" ] ; then
>
> but what shells do actually break with this, and under what conditions?
It's not shells that break. It's these kinds of issues:
http://thread.gmane.org/gmane.comp.sysutils.autoconf.general/13706
Cheers,
Ralf