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Excluding a specific column from sed replacement


 
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# 1  
Excluding a specific column from sed replacement

Hi,

I would like to replace all 0's to 1's throughout my text file. However I do not want column 3 altered. How do I go about doing that? Thanks!
# 2  
Try:
Code:
awk '{for(i=1; i<=NF; i+=i==2?2:1) gsub(0,1,$i)}1' file


Last edited by Scrutinizer; 01-11-2013 at 04:48 PM..
# 3  
sed does not understand what a column is.

Your best bet would be to use a language like awk, which understands what a column is.

You'd be better served learning the awk language than asking endless questions which are trivially answered in it...

Code:
awk '{ for(N=1; N<=NF; N++) { if(N==3) continue; if($N == "0") $N=1 } 1' inputfile

 

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