how to generate random numbers in a shell script?

[Brian]

$(($RANDOM%59))

On Tue, Oct 6, 2009 at 2:14 PM, Eugeneapolinary Ju <
eugeneapolinary81 at yahoo.com> wrote:

>  echo -e '#!/bin/sh\nsomething=$[ ($RANDOM % 59 ) ]'>test.sh
>
>
> # cat test.sh
> #!/bin/sh
> something=$[ ($RANDOM % 59 ) ]
>
>
> # sh test.sh
> test.sh: 2: Syntax error: "(" unexpected
>
> --- On *Tue, 10/6/09, Jonathan Hudson <jh+ubuntu at daria.co.uk<jh%2Bubuntu at daria.co.uk>
> >* wrote:
>
>
> From: Jonathan Hudson <jh+ubuntu at daria.co.uk <jh%2Bubuntu at daria.co.uk>>
> Subject: Re: how to generate random numbers in a shell script?
> To: ubuntu-users at lists.ubuntu.com
> Date: Tuesday, October 6, 2009, 7:29 PM
>
>
> On Tue, 6 Oct 2009 12:16:09 -0700 (PDT), Eugeneapolinary Ju wrote:
>
> ># something=$[ ($RANDOM % 59 ) ]
> ># echo $something
> >29
> >
> >
> >ok, but if I put it in a script:
> >
> ># echo -e '#!/bin/bash\nsomething=$[ ($RANDOM % 59 ) ]'>test.sh
> >
> ># cat test.sh
> >#!/bin/bash
> >something=$[ ($RANDOM % 59 ) ]
> >
> ># sh test.sh
> >test.sh: 2: Syntax error: "(" unexpected
> >
> >
> >
> >Why??
> >
> >Thank you! :S
> >
> >
> >
>
> bash ain't sh
>
>
>
>
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