for loop in awk command

jssidhu4 · 03-30-2010, 06:26 PM

how do I use the for loop in awk command to read the file records and then use the for loop to display (hence number) each line like

1. sometext here
2. sometext here

please help

Tinkster · 03-30-2010, 07:35 PM

I don't quite follow ...
If you just want a record number for each line just print it like so (no loops at all):

Code:

awk '{print NR". "$0}' file

Cheers,
Tink

jssidhu4 · 03-30-2010, 07:40 PM

Thanks,

I know this but it is a requirement to have a for loop doing this so, if you can help me by showing with a for loop your help would be very great
once again thank you so much

GrapefruiTgirl · 03-30-2010, 07:43 PM

http://www.ibm.com/developerworks/library/l-awk2.html

Exactly halfway down the page I linked above (which I found by Googling for "awk for loop") is a nice little example.

Cheers!

Sasha

grail · 03-30-2010, 07:45 PM

Let me see what google has to say:

http://www.lmgtfy.com/?q=awk+for+loop

jssidhu4 · 03-30-2010, 08:59 PM

okay but how do I put number in front of each record?

Tinkster · 03-30-2010, 09:34 PM

Have you actually LOOKED at the link Sasha suggested?

GrapefruiTgirl · 03-31-2010, 04:19 AM

LQ has a very agile search engine built in. I got really good results, and a lot of examples of using awk, like this:

I went to the LQ Search Page;
Typed "awk for loop" into the 'search by keyword' text field;
I selected 'search entire posts' in the drop-down thingy just below that;
I selected the 'Programming' forum as the forum to search...

223 items returned!