From: dblack@...
Date: 2007-07-01T22:25:16+09:00
Subject: Re: awk regexp search

---2049402039-172797744-1183296317=:14506
Content-Type: MULTIPART/MIXED; BOUNDARY="-2049402039-172797744-1183296317=:14506"

  This message is in MIME format.  The first part should be readable text,
  while the remaining parts are likely unreadable without MIME-aware tools.

---2049402039-172797744-1183296317=:14506
Content-Type: TEXT/PLAIN; charset=X-UNKNOWN; format=flowed
Content-Transfer-Encoding: QUOTED-PRINTABLE

Hi --

On Sun, 1 Jul 2007, baptiste Augui=E9 wrote:

> Hi,
>
> The last bit of a bash program is still resisting me. Here is the code I =
used=20
> before:
>
> awk '/scattering efficiency/{print $4}' ../OUTPUTFILES/Output.dat
>
>
> How would you do that in Ruby? I just need to locate this regexp in the f=
ile,=20
> and get the following value in the same line. I've tried something like,
>
> output_file=3DIO.readlines('../OUTPUTFILES/Output.dat').to_s
> myarray =3D output_file.each_line(/scattering efficiency/){|elt| print=20
> elt.to_s, '\t'}
>
> but it clearly doesn't work.

Here's a little test/demo (using stdin) -- I've added =3D> to the output
lines:

$ ruby -ne 'puts $1 if /scattering efficiency\s+(\S+)/'
scattering efficiency blah
=3D> blah
nothing
this has scattering efficiency just like the other one
=3D> just


David

--=20
* Books:
   RAILS ROUTING (new! http://www.awprofessional.com/title/0321509242)
   RUBY FOR RAILS (http://www.manning.com/black)
* Ruby/Rails training
     & consulting:  Ruby Power and Light, LLC (http://www.rubypal.com)
---2049402039-172797744-1183296317=:14506--
---2049402039-172797744-1183296317=:14506--