Re: Bash scripting -- Usage of arrays

From: Jayesh Jayan (jayesh.freebsdlist_at_gmail.com)
Date: 11/29/05

  • Next message: Jayesh Jayan: "Re: Bash scripting -- Usage of arrays" 
    Date: Wed, 30 Nov 2005 03:20:42 +0530
To: John Baldwin <jhb@freebsd.org>

    Hi John,

    Thank you.

    It seems to work like a charm.

    On 11/30/05, John Baldwin <jhb@freebsd.org> wrote:
    >
    > 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
    > 

    --
Jayesh Jayan
"The box said "Requires Windows 95, NT, or better", so I installed Linux."
Visit my homepage @ http://www.jayeshjayan.com
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