From: Phrogz <phrogz@...>
Date: 2010-01-28T14:20:08+09:00
Subject: Re: Installing Ruby Application

On Jan 26, 9:03 am, Phillip Gawlowski <p...@thimian.com> wrote:
> On 26.01.2010 16:40, Phrogz wrote:
> > You don't even need it to have a .rb extension if you have a shebang
> > line at the top.
> > (Even works on Windows.)
> > #!/usr/bin/env ruby -KU
>
> No, it doesn't.
[snip[
> Ruby's installers register the .rb[w] extension with Windows, however.

Ah, silly me, right you are. I was confused because I have an
executable without a .rb extension and it 'just worked' when I
installed the gem. I misattributed it to some shebang line magic
somewhere. In fact, the rubygems install process creates a .bat file
in the ruby bin directory with the name of your executable, and hence
you can just type "mycommand" at a Windows prompt and it will work.

The shebang line is still a good idea, but wholly unrelated to why you
can create a 'binary' command without a .rb extension in a gem and
have it work on Windows.