[ILUG] sed question

[Paul Jakma]

On Thu, 19 Feb 2004, Padraig Brady wrote:

> OK I've a (very big) file like:
> 
> 0
> 0
> 1
> 1
> 2
> 2
> 3
> 3
> :
> 
> I would like to find and print the "2" lines,
> AND THEN STOP PRCOCESSING the humungous file.

awk ' $1 == "2" { lines[i++] = $0 } \
      $2 > "2" { exit(); } \
      END { for (j=0; j < i; j++) { print lines[j] }'

or somesuch?
 
> I got as far as sed -n '/2/{p;b};q' but that doesn't deal with the
> case where there are initial lines that don't match.
> 
> Pádraig.

regards,
-- 
Paul Jakma	paul at clubi.ie	paul at jakma.org	Key ID: 64A2FF6A
	warning: do not ever send email to spam at dishone.st
Fortune:
Patience is the best remedy for every trouble.
		-- Titus Maccius Plautus