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Subject: Re: behaviour of "for (( exp1; exp2; exp3 )); do COMMANDS; done"
References: <PHENJGDFMJPEBOBLGEMOCENMCBAA DOT peter DOT oosterlynck AT oracle DOT com>
From: Harald DOT Maier DOT BW AT t-online DOT de (Harald Maier)
Reply-To: Harald Maier <maierh AT myself DOT com>
Date: Wed, 28 May 2003 08:08:02 +0200
In-Reply-To: <PHENJGDFMJPEBOBLGEMOCENMCBAA.peter.oosterlynck@oracle.com> (Peter
 Oosterlynck's message of "Tue, 27 May 2003 09:56:37 +0200")
Message-ID: <m3brxn38ot.fsf@ate.maierh>
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"Peter Oosterlynck" <peter DOT oosterlynck AT oracle DOT com> writes:

> When using a line like "for (( i=1 ; i<=5 ; i+=1 )); do echo $i;
> done" in a bash script one expects to get a list of figures ranging
> from 1 to 5 right?  I've never had problems with such constructs on
> my Linux machine but when doing this in a cygwin bash shell, then it
> works fine when typed in at the command line but fails with a syntax
> error "Bad for loop variable" when executed in a script.
>
> Where did I go wrong? Ideas anybody?

This works for me on all bash environments. Keep strong the syntax.

Harald

--- for example ---
#! /bin/bash

for (( i=1; $i < 10; i=$i+1)); do
  echo $i
done
-------------------




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