From: Chad Perrin <perrin@...>
Date: 2010-03-01T08:26:29+09:00
Subject: Re: running a file

--nmemrqcdn5VTmUEE
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Mon, Mar 01, 2010 at 12:57:50AM +0900, John Pasqa wrote:
>=20
> thats not how I have it now, but I think it would work beautifully. What=
=20
> I need is the code that would let my program take a command argument,=20
> any clues as to where i could find that?

Look into Ruby's handling of the ARGV array, which is automaticaly
populated with command line argument strings.  For instance, if a single
argument of 'filename.txt' is supplied, the following is true:

    ARGV[0] =3D=3D 'filename.txt'

Thus, you could use ARGV[0] as an argument for File.open() or File.read()
to open a file.  There are other means of getting such input in Ruby as
well, such as using this:

    while gets
      # do stuff with $_
    end

That can be implicitly wrapped around the rest of your code by way of the
-n command line option for Ruby, and is equivalent to the following Perl
idiom:

    while (<>) {
      # do stuff with $_
    }

I recommend doing some searches in your favorite search engine for file
input and handling of STDIN with Ruby.  I've probably done enough of your
work for you already.

--=20
Chad Perrin [ original content licensed OWL: http://owl.apotheon.org ]

--nmemrqcdn5VTmUEE
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.14 (FreeBSD)

iEYEARECAAYFAkuK+2MACgkQ9mn/Pj01uKXihACeLS4yVhE32M4crfLNQIMUHkcU
+oUAoOwXIHk2FjkONH3ESouFoVm0kHeN
=jfsK
-----END PGP SIGNATURE-----

--nmemrqcdn5VTmUEE--