[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [bug-gawk] New Features for gawk
From: |
Jeroen Schot |
Subject: |
Re: [bug-gawk] New Features for gawk |
Date: |
Wed, 31 Aug 2011 09:55:11 +0200 |
User-agent: |
Mutt/1.5.20 (2009-06-14) |
On Tue, Aug 30, 2011 at 05:03:01PM -0600, Nelson H. F. Beebe wrote:
> Guenter Goebel suggests new gawk options --start-record and --ignore-eof.
>
> The pattern/action pair
>
> (FNR > 2) && /Network is unreachable/ { print $0 }
>
> should simulate the first, and work with all awk implementations.
You are right, it might be easier to understand/extend if you split
this in two pattern/actions:
FNR <= 2 { next; }
/Network is unreachable/
> I'm unclear about the purpose of --ignore-eof, but perhaps it too is
> unneeded.
An easy way do this (if I understand correctly) is by chaining tail
and gawk as the creators of UNIX intended:
tail -n +0 -f logfile | gawk '...'
So it seems both new options can easily be simulated with our current
*NIX tools.
Regards,
--
Jeroen Schot