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Message-ID:	<42E4DB17.9030101@byu.net>
Date:	Mon, 25 Jul 2005 06:29:11 -0600
From:	Eric Blake <ebb9 AT byu DOT net>
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To:	Marek <mkierebi AT o2 DOT pl>
CC:	cygwin AT cygwin DOT com
Subject:	Re: Problem with shell script
References:	<20050724191302 DOT 58251D10DB AT rekin6 DOT o2 DOT pl>
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According to Marek on 7/24/2005 1:13 PM:
> When I put commands below in command line:
> i=1
> echo $i
> i=$(($i+1))
> echo $i
> 
> everything works well (i is incremented from 1 to 2), but when I run this as a shell script the result is:
> 1+1 instead of 2
> 
> How should I do incrementation in shell script?

It depends on what shell you are using.  Following these directions:

> Problem reports:       http://cygwin.com/problems.html

will give me a better idea what version of /bin/sh you have, and you
should also say whether you are using a #! line at the start of your
attempted script.  Bash can do arithmetic expansion as required by POSIX,
ash cannot.

- --
Life is short - so eat dessert first!

Eric Blake             ebb9 AT byu DOT net
volunteer cygwin bash maintainer
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