Pattern matching

What am I missing here?

File:
http://standards.ieee.org/regauth/oui/oui.txt

Need: to reveal the company name, based on the first 3 bytes of the MAC
address ($3 of every line where $1 is in xx-xx-xx format, with x=[0-9a-f]

awk script attempted:

awk '$1 ~ /^[0-9a-f][0-9a-f]-[0-9a-f][0-9a-f]-[0-9a-f][0-9a-f]/i {print
$3}' oui.txt

Instead I am getting $3 of EVERY line, not only those matching pattern ...

What am I missing?!?

TIA,
papi

papi wrote:
> What am I missing here?
>
> File:
> http://standards.ieee.org/regauth/oui/oui.txt
>
> Need: to reveal the company name, based on the first 3 bytes of the MAC
> address ($3 of every line where $1 is in xx-xx-xx format, with x=[0-9a-f]
>
> awk script attempted:
>
> awk '$1 ~ /^[0-9a-f][0-9a-f]-[0-9a-f][0-9a-f]-[0-9a-f][0-9a-f]/i {print
> $3}' oui.txt
>
> Instead I am getting $3 of EVERY line, not only those matching pattern ...
>
> What am I missing?!?

You are missing the fact that - must be escaped.
This one works (tested):

awk '$1 ~ /^[0-9a-f][0-9a-f]\-[0-9a-f][0-9a-f]\-[0-9a-f][0-9a-f]/ {print $3}
' oui.txt

In article <30earoF2urcspU1@uni-berlin.de>,
examnotes  <Juergen.KahrsDELETETHIS@vr-web.de> wrote:
... 
>
>You are missing the fact that - must be escaped.
>This one works (tested):
>
>awk '$1 ~ /^[0-9a-f][0-9a-f]\-[0-9a-f][0-9a-f]\-[0-9a-f][0-9a-f]/ {print $3}' oui.t
xt

I don't think that is true.  The "-" is not inside of [], so it is just an
ordinary character.

I think the problem has to do with the "i" at the end of the original reg
exp.  I recognize that as TAWK syntax for doing a case-insensitive match.
It looks like the OP was trying to use it on a non-TAWK version.

On Mon, 22 Nov 2004 15:19:36 +0100, Jürgen Kahrs wrote:

> papi wrote: 
>
> You are missing the fact that - must be escaped.
> This one works (tested):
>
> awk '$1 ~ /^[0-9a-f][0-9a-f]\-[0-9a-f][0-9a-f]\-[0-9a-f][0-9a-f]/ {print $3}' oui.
txt

Thank you - I thought I have tried this before, but you know what I
screwed me up that time? The /i at the end! Once I looked at yours I
realized the screw-up ... thx!

Kenny McCormack wrote:

> I think the problem has to do with the "i" at the end of the original reg
> exp.  I recognize that as TAWK syntax for doing a case-insensitive match.
> It looks like the OP was trying to use it on a non-TAWK version.

I thought the i was a typo.