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Full Discussion: AWK Position Variables
Top Forums Shell Programming and Scripting AWK Position Variables Post 302465565 by Lord Spectre on Friday 22nd of October 2010 07:30:30 PM
Old 10-22-2010
AWK Position Variables

Hello guys,
I'm stuck with AWK and probably stupid stuff. Smilie
I've a file with some values like:
Code:
123 456 10 11 90 39 20 ...........

Then, extracting these vaues from that file is quite simple:
Code:
tail -1 "filename"|awk '{printf $2}'

This will show: 456

Now, what I don't realize is how to do a sequentially extraction using the for cycle:

Code:
for position in 1 2 3 4 5
do
     tail -1 "filename"|awk '{printf ${position}}'
done



The above string is not correct since I receive an error (awk: line 1: syntax error at or near {)

Could someone help me to understand how extracting all values using a for and a position variable ??

Thanks!
Last edited by Scott; 10-23-2010 at 11:46 PM.. Reason: Please use code tags
 

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