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Re: [PLUG] Shell scripting?
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On Wed, Apr 21, 2010 at 09:49:12AM -0400, Paul L. Snyder wrote:
>
> Invoking bash as sh (that is, via the link) changes its behavior.
> (It's the equivalent of invoking with the --posix option.) It doesn't
> result in a perfect emulation of the historical Bourne shell behavior,
> but it shifts a few things around so it's a bit closer.
>
Wow.
This is a fantastic thread, let alone idea for a topic (though my
evenings always seem to be busy :-(
I never read the "INVOCATION" section of the bash man page before.
I had no idea. I can imagine an interview question now of "when
is a symlink not just a symlink". :-P
After reading that section, either I'm misunderstanding it, or there's
actually an even yet more subtle difference to invoking bash as /bin/sh
vs invoking it with --posix.
Sadly, the phrase "It's not a bug - it's a feature!" is coming to
mind. It's amazing what documenting something well(?) will let you
get away with. I need another cup of coffee before I go back to that
man page. <sigh/>
-Randall
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