Date: Tue, 29 Nov 2005 16:17:15 -0500 From: John Baldwin <jhb@freebsd.org> To: freebsd-hackers@freebsd.org Cc: Jayesh Jayan <jayesh.freebsdlist@gmail.com>, freebsd-questions@freebsd.org Subject: Re: Bash scripting -- Usage of arrays Message-ID: <200511291617.16666.jhb@freebsd.org> In-Reply-To: <e8ecf3c00511291309yb9caeb9uebdf92c4ad7af4f8@mail.gmail.com> References: <e8ecf3c00511291309yb9caeb9uebdf92c4ad7af4f8@mail.gmail.com>
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On Tuesday 29 November 2005 04:09 pm, Jayesh Jayan wrote:
> Hi,
>
> Today I was trying to script using arrays in FreeBSD 5.4 but it doesn't
> work.
>
> Below is a sample script which I used.
>
> ******************************************************
>
> #!/bin/bash
>
> array=( zero one two three four);
> echo "Elements in array0: ${array[@]}"
>
> ******************************************************
>
> It works fine on RedHat server.
>
> Below is the output.
>
> # sh array.sh
> Elements in array0: zero one two three four
>
> Below is the out put from the FreeBSD server using the same code.
>
> -bash-2.05b# sh aa.sh
> aa.sh: 3: Syntax error: word unexpected (expecting ")")
>
> Please guide me on how to use arrays on freebsd too.
sh != bash
You can either install bash from ports, or you can write your scripts in sh
without using bash extensions. For example, with sh you can do things like:
array="zero one to three four"
for x in $array; do
echo $x
done
However, you can't easily get the count of items. You could maybe do
something like:
set $array
echo "$# items"
but that's somewhat hackish.
--
John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve" = http://www.FreeBSD.org
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