Modifying col values based on another col


 
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# 8  
Old 01-25-2013
In this code we are modifying just $4. In the sample data that you provided $3 is actually blank because there are 2 tab spaces after $2

So basically you have to identify new positions of $2 & $4 and replace it accordingly in this code.

You can use od to view the tab spaces or use awk itself to find the field positions:
Code:
od -c filename

Code:
awk -F'\t' '{ print $1, $2, $3, $4, $5, $6, $7, $8; }' OFS=# filename

I hope this helps.
This User Gave Thanks to Yoda For This Post:
# 9  
Old 01-25-2013
I understand now, that helped a lot, thank you

Got desired op, thanks a ton Smilie

Last edited by newbie83; 01-25-2013 at 02:11 PM..
# 10  
Old 01-25-2013
Alternatively:
Code:
awk '$NF~/BAM/{sub(/.* /,$2,$NF); sub(/../,x,$NF); gsub(" ",x,$NF)}1' FS='\t' OFS='\t'  file

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