From: dblack@...
Date: 2007-07-02T04:54:15+09:00
Subject: Re: awk regexp search

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Hi --

On Sun, 1 Jul 2007, Robert Dober wrote:

> On 7/1/07, dblack@wobblini.net <dblack@wobblini.net> wrote:
>> Hi --
>>=20
>> On Sun, 1 Jul 2007, baptiste Augui=E9 wrote:
>>=20
>> > Hi,
>> >
>> > The last bit of a bash program is still resisting me. Here is the code=
 I=20
>> used
>> > before:
>> >
>> > awk '/scattering efficiency/{print $4}' ../OUTPUTFILES/Output.dat
>> >
>> >
>> > How would you do that in Ruby? I just need to locate this regexp in th=
e=20
>> file,
>> > and get the following value in the same line. I've tried something lik=
e,
>> >
>
>> $ 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
>>=20
> The problem is that we have no idea where "scattering efficency" is
> relatively to $4 :(

He said "the following value", so I assumed it would be a \S+ match
after a \s+ match.

> However
>
> ruby -ane 'puts $F[3] if /scattering efficency/' ../ton/beau/fichier
>
> does the same as the awk script above

Wow -- I really must brush up on 'man ruby' :-)


David

--=20
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