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Re: [PLUG] Distinguishing between environment variable with null value and one that is not set
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On Tue, 13 Oct 2009, Paul L. Snyder wrote:
> Indeed, '[[' is a reserved word with undefined behavior, as I should have
> remembered. The '[' command works, or its synonym 'test' (which needs a
> subshell, so there you have it).
D'oh! Rather, it requires spawning a new process, not a subshell.
Remember, kiddies, if you're going to be a pedant, be sure you get it
right.
Paul
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