Date: Sun, 27 Apr 1997 21:50:18 +1000 From: Giles Lean <giles@nemeton.com.au> To: Curt Sampson <cjs@portal.ca> Cc: Andrew Gierth <andrew@erlenstar.demon.co.uk>, hackers@freebsd.org Subject: Re: /etc/netstart bogons.. Message-ID: <199704271150.VAA01731@topaz.nemeton.com.au> In-Reply-To: <Pine.NEB.3.93.970426214717.24845C-100000@gnostic.cynic.net>
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On Sat, 26 Apr 1997 21:47:32 -0700 (PDT) Curt Sampson wrote:
> > Can't let this slip past: "" and unset are certainly not the same in sh.
>
> So how do we test for the difference between the two?
Use ${notset-value}. Use ${notset:-value} if "" should count as
unset.
Giles
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