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Date: Wed, 4 Dec 1996 00:23:02 -0900 (AKST)
From: "Christopher E. Brown" <cbrown@matnet.com>
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To: sln@public.jn.sd.cn
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Subject: Re: shell programming
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On Wed, 4 Dec 1996 sln@public.jn.sd.cn wrote:

> Hi,
> 
> I want to calculate intergers under Bourne Shell, I input the following:
> 
> a=10 <enter>
> a='expr $a+10' <enter>
> 


a=10
a= `expr $a + 10`

Note the spaces and the ` ` not ' '


`expr $a + 10` says execute expr and grab the output 'expr $a + 10' say 
this is a literal (same as using " ")


----------------------------------------------------------------------------
Christopher E. Brown              WL7CLA                 <cbrown@matnet.com>

	As folks might have suspected, not much survives except roaches,
and they don't carry large enough packets fast enough...

	--About the Internet and nuclear war.
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