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Sorting by columns

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# 1  
Old 01-12-2014
Sorting by columns
Hi, I have a tab delimited columnar file where I want to remove lines wherever two particular columns match. so for this file, I want to toss the lines where columns 1 and 2 match:
Code:
a	a	1	3
a	b	2	4
b	b	3	5

because there are matches column 1 and 2 in lines 1 and 3, I would like a script to provide the following output:
Code:
a	b	2	4

Can this be done with a sed one liner? Can anyone help me with this?

THANKS!
Last edited by Franklin52; 01-13-2014 at 03:11 AM.. Reason: Please use code tags
# 2  
Old 01-12-2014
Code:
awk '$1!=$2' file

This User Gave Thanks to Yoda For This Post:
mikey11415
# 3  
Old 01-12-2014
PERFECT! Thank you!
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