topic Re: awk help in Operating System - Linux

awk help

lawrenzo_1 — Wed, 07 Feb 2007 06:52:30 GMT

Hi all,

I am trying to use awk to manipulate some data:

heading1 heading2 heading3
2 4 7
34 45 1

service
xyz 17

I use awk to print the first line after heading:

awk 'NR>1 {print $2}'

i get

4
45

how can I just display the first number in heading2 which shoud be 4?

many thanks

Re: awk help

Dennis Handly — Wed, 07 Feb 2007 06:55:13 GMT

awk 'NR==2 {print $2}'

Re: awk help

Dennis Handly — Wed, 07 Feb 2007 07:06:48 GMT

This is probably much faster if your file has zillions of lines:
$ awk 'NR==2 {print $2; exit 0}'

Re: awk help

lawrenzo_1 — Wed, 07 Feb 2007 07:10:16 GMT

nice one - thanks Dennis

another awk string to add to me bow.

Chris.

Re: awk help

Dennis Handly — Wed, 07 Feb 2007 07:17:24 GMT

This has no test for record 2:
awk 'BEGIN { getline; getline; print $2; exit 0}'