From: Jano Svitok <jan.svitok@...>
Date: 2008-04-09T00:01:04+09:00
Subject: Re: programmatically associate a file extension

On Tue, Apr 8, 2008 at 4:51 PM, Kumar Ca <kumar.anul@gmail.com> wrote:
> Hi,
>
>  How can we programmatically associate a file extension to my program
>  using Ruby.
>
>  Please send information regarding this.
>
>  Thanks in Advance,
>  kumar

if you are on windows, use ftype and assoc commands.

http://www.ss64.com/nt/ftype.html